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How to Assign Static IP Addresses to Docker Compose Containers

How to Assign Static IP Addresses to Docker Compose Containers

When we start Docker containers with Docker Compose, all the service containers in it will get dynamically assigned IP addresses. For example, if you run the containers in the below docker-compose.yml file, each of its app service containers can get new or random IP addresses from its default network. This dynamic IP behaviour is not a problem for containers in the same docker-compose.yml file as they can resolve hostnames out of the box. But the problem is, when you wanted to connect to these containers from the host PC or any other external network, it will be fairly difficult to determine the exact IP address as they do not have any static IP addresses.

Under that kind of situation, we can assign static IP addresses to Docker Compose service containers so they will always get the exact same IP address. For that, first, we must add a custom network to the docker-compose.yml file. Make sure to mention an unused subnet or otherwise, you will not be able to start containers.

Then, mention that network (Ex: appNetwork) for each service container that needs a static IP address. Also, make sure to double-check whether the IP address that you are going to assign is in the range of the subnet.

Likewise, if you need, you can mention IPv6 addresses with ipv6_address as well.

Ultimately, the final docker-compose.yml file should look like something similar to the following.

Now you can start containers using the docker-compose up command. Add the -d flag if you need to start containers in the detached (background) mode.

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How-To Geek

How to assign a static ip to a docker container.

Static IP addresses don't change when containers or services are stopped and started, making them useful for permanent networking.

Quick Links

Why use a static ip, setting up static ips, using docker compose.

Static IP addresses don't change when containers or services are stopped and started, making them useful for permanent networking. Assigning Docker containers static IP addresses is an easy way to make them more accessible.

There are two kinds of "static IP"; private IP addresses used for internal networking inside a server, and public IP addresses used to connect outside the server, often over the internet.

If you need to set up a public IP address for a container, you'll want to use port bindings. You can "publish" ports on the Docker container to be accessible from the host. While there are more advanced networking setups, this is by far the easiest and most common. For example, binding port 80 (HTTP) on the host to point to an NGINX container:

docker run --publish=80:8080 nginx

If you want to make a static private IP address, you should consider if you need to use one at all. Most of the time, you'll want a static IP to talk to one container from another, or from the host. In most cases, Docker's built in networking can handle this.

Docker comes with a default network, but if you make your own, you can give containers aliases when launched in that network. This alias will resolve to the container's private IP automatically. For example, the NGINX container here can access the MongoDB instance with the connection string mongodb://mongohost:27017 .

docker network create example

docker run --net example --name nginx -d nginx

docker network connect example --alias mongohost mongodb

To learn more, you can read Docker's documentation on user-defined bridge networks .

However, there are still plenty of times when you'll want to manually specify a private IP address, such as accessing containers directly from the host. You'll still need to use a custom Docker network to do so, but it's easy to set up.

First, you'll need to set up a Docker network, and since we care about the IP address, you'll need to specify a fixed subnet:

docker network create --subnet=172.20.0.0/16 customnetwork

Then, you can run a container, specifying the network with the --net  flag, and specifying the IP with the -ip  flag:

docker run --net customnetwork --ip 172.20.0.10 -d container

You caan verify the address is correct by checking it in container with exec -t bin/bash , or by inspecting the Docker container list:

docker inspect -f '{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}' name_or_id

Docker Compose is a tool used to launch multiple containers with predefined settings. This includes setting up networks with specific subnets, and you can attach containers to networks with fixed IPs using the ipv4_address  config block shown here:

version: '2'

image: nginx

container_name: web-server

customnetwork:

ipv4_address: 172.20.0.10

- subnet: 172.20.0.0/16

Virtualization Howto

Docker Compose Static IP configuration

assign ip address docker compose

The Docker Compose static IP address mechanism is a great way to stay in total control of the network configuration of your Docker containers created using your Docker compose process. Docker compose enables creating multiple containers in bulk and configuring the network settings for each container as they are provisioned. By default, it dynamically assigns IP addresses. However, you can use a Docker Compose static IP address configuration to assign the IP addresses configured for your docker containers manually.

Docker Compose Static IP

Docker containers communicate with other containers through a network connection between them. Docker creates a private virtual network to allow containers to communicate with each other using private IP addresses. Docker Compose Static IP enables defining static IP addresses for containers on a Docker network.

Take note of the docker-compose.yml file below. The file is creating two containers: web and DB, with static IP addresses. It uses private IP address configurations, which are always environment based and need to be managed along with other network IP ranges in the environment:

We are creating a custom network called test_network and configuring it to use the IP address range 172.16.238.0/24 . We assign the IP address 172.16.238.10 to the web container and the IP address 172.16.238.11 to the db container.

Docker Compose will create the two containers as defined and use the IP addresses specified in the Docker Compose file. Below is a simple docker-compose.yml configuration used to deploy containers in the home lab environment.

assign ip address docker compose

Docker Static IP Benefits

Docker Compose Static IP has several benefits:

It allows you to know the IP addresses for each container easily and simplifies container management

It places you in control of network addressing, allowing you to define custom IP address ranges and define how your application communicates across the network

When you use static IP addresses for your containers, you can ensure their IP addresses remain the same when the container restarts or is recreated using Docker Compose

It simplifies connecting to a container’s ports. By specifying the container’s IP address and port number, you can connect to a container’s ports directly

Container names for connectivity

In addition to using static IP addresses, you can also use container names to connect to containers. Docker automatically assigns these when you create a container, and it can be used to reference a container in a Docker network.

For example, you can use the container name to specify the connection string when accessing containers directly.

Docker default network

Docker compose creates a default network when you use it to create your containers. All containers on a host are connected to this default network if you don’t define a static IP address configuration.

The docker network create command is used to create a custom network. You can also set the driver to be used by the network and configure the IP address management settings.

For example, you can use the bridge IPAM driver to assign IP addresses to network containers automatically.

For example, if you have a container running a web server, you can connect to it by specifying its IP address and port number in a web browser.

assign ip address docker compose

Other network details

In addition to static IP addresses, Docker Compose allows you to configure other networking details , such as DNS settings, gateway settings, and environment variables.

You can customize your network configuration to meet your specific needs by configuring these details in your Docker Compose file.

assign ip address docker compose

Driver and IPAM details

When you define a network in Docker Compose, you can specify its name and the driver for the network. You can also configure the network’s IP address management (IPAM) settings.

IPAM settings allow you to specify the subnet and gateway for the network and any additional options required for the network configuration.

Connecting containers to a Docker network

To connect containers to a network, you can specify the network name in the container’s configuration. As shown, you can specify the test_network network in the web and db containers in the example.

assign ip address docker compose

Connect a single container to multiple networks

When you connect a single container to multiple networks, you can configure the Docker container to connect to multiple networks defined on the Docker host. When you do, you can specify the external network driver for connecting a container to an existing network managed by Docker Compose.yml file.

Unique IP addresses

It is extremely important to understand that IP addresses must be unique. When you decide to configure static IP addresses for your Docker containers, you must understand you are taking management of the IP addresses into your hands instead of these being handled automatically.

Docker Compose IP FAQs

What is Docker Compose? Docker Compose is a way to configure multiple containers using a single configuration file. You can define which containers you want to include and the network configuration for one or multiple containers.

Why set static IPs for your Docker container configuration? Static IPs ensure your containers have the same network configuration each recomposed time. This is great for database services where you must point your frontend web services to a specific database container.

Why do IP addresses need to be unique? IP addresses must be unique. This requirement is not unique to Docker. It is a requirement for TCP/IP networks in general.

Wrapping Up

Docker Compose is a robust way to manage your Docker container creation, deployment, and configuration. It allows the creation of new Docker containers in a single configuration file. In addition to allowing Docker to manage IP addresses for the provisioned containers automatically, you can also set static IP addresses on your Docker containers within the Docker Compose file.

In addition to configuring static IP addresses, you can also configure additional networking details. These additional network configuration parameters include DNS server settings, default gateway, and other network environment variables.

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Brandon Lee

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Set specific IP addresses to docker containers created with docker-compose

21 April 2017 — Comments

Recently I have been testing one service and its clustering capabilities, in order to see if it fits in a project I’m working on.

I decided the easiest way to do this was by creating a couple docker containers and setting up a cluster between them. It should be an easy task in theory.

My first approach was using a docker-compose file and linking the containers between themselves:

My surprise when I run docker-compose up -d was that I received this message:

It makes sense, since docker-compose checks links in order to run containers in the correct order. It is not possible in this case because every container depends on the other two.

Fixing the problem with networks

By default docker assigns random (sort of…) IP addresses to containers. By using links you make an entry to be added to the hosts file of a container, mapping the name of another container with its IP address. This way you don’t need to know its IP address, you can access it over the network by just using its name.

I needed all containers to have a “known” network identifier in order to get the cluster working, because this service consumes a configuration on start-up that’s not dynamic.

The solution was making the containers have a static known IP, this way they can be run without links and still communicate between themselves.

Gladly, docker-compose supports networks since version 2, and I was able to define this configuration:

Using the ipam you can define a specific CIDR block for the new network, and then, attaching every container to that network, you can specify its IP address on that range.

Now, test_1 is always run with the IP address 172.28.1.1, test_2 with 172.28.1.2 and test_3 with 172.28.1.3, and I’m able to hardcode those addresses in the config files.

And that’s all!

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Tales from the Command Line…

ForDoDone

Docker Compose static IP address in docker-compose.yml

Usually, when launching Docker containers we don’t really know or care what IP address a specific container will be given. If proper service discovery and registration is configured, we just launch containers as needed and they make it into the application ecosystem seamlessly. Recently, I was working on a very edge-case multi-container application where every container needed to know (or be able to predict) every other containers’ IP address at run time. This was not a cascaded need where successor containers learn predecessors’ IP addresses, but more like a full mesh.

In Docker Engine 1.10 the docker run command received a new flag namely the --ip flag. This allows you to define a static IP address for a container at run time. Unfortunately, Docker Compose (1.6.2) did not support this option. I guess we can think of Engine as being upstream of Compose, so some new Engine features take a while to make it into Compose. Luckily, this has already made it into mainline dev for Compose and is earmarked for release with the 1.7.0 milestone (which should coincide with Engine 1.11). Find the commit we care about here .

get the dev build for Compose 1.7.0:

In this case I decided to keep the 1.6.2 docker-compose binary along with the 1.7.0 docker-compose binary, then create a symlink to the one I wanted to use as the active docker-compose

Here’s a sample of how you might define a static IP address in docker-compose.yml that would work using docker-compose 1.7.0

3 thoughts on “ Docker Compose static IP address in docker-compose.yml ”

This feature looks pretty cool. I have a slightly different situation though; I want to scale services across multiple servers (docker-machines), and each of those servers has multiple IP addresses assigned. The problem is two of those services expose HTTP/HTTPS ports (80/443), but I want to be able to run both services on each docker-machine, just binding to separate IPs. Any ideas how I could achieve that?

Thanks for the comment! There are a few things to consider. You could run your services on alternate random ports and let a service discovery/registration mechanism notify upstream resources where the service is located. For example if you were running a webserver behind a reverse proxy, you could let docker choose random ports for the webserver and then use consul to register the service and notify your load balancer what ephemeral ports the service is available on.

You can also explicitly or implicitly tell docker where to schedule containers. In a swarm cluster, you can use compose to explicitly define a “constraint” on which docker engine a container will be scheduled. Using “volumes_from” implies that the containers will be scheduled on the same engine node, and defining “ports” will prevent containers using the same ports to be on the same host, essentially mutually excluding them from the same engine node.

In docker run you can define a port binding with -p and you can give it a host IP as well. For example docker run -p 192.168.1.201:80:80 will bind the host IP address 192.168.1.201 port 80 to the container port 80. You could then run multiple other containers on different host IPs using the same port (i.e. -p 192.168.1.202:80:80, -p 192.168.1.203:80:80).

We always assume (but isn’t always the case) that docker-compose follows docker run and that every docker run command is available to use in a docker-compose file. I would think you could define the “port” for a container and give it a host IP address to use for binding.

Cheers! TODO: test port definition in compose file with IP defined TODO: test swarm automatic scheduling with multiple engine node IPs available and identical statically defined host binding ports

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How to Get A Docker Container IP Address - Explained with Examples

Docker provides the ability to package and run an application in a loosely isolated environment called a container.

I know what you might be thinking – come on, not another post explaining what Docker is, it's everywhere these days!

docker-i-see

But don't worry, we are skipping that basic introduction. The target audience for this article should already have a basic understanding of what Docker and Containers are.

But have you ever wondered how to get a Docker Container IP Address?

Docker network explained

First, let's understand how the Docker network works. For that we are going to focus on the default bridge network. When you are using Docker, if you don’t specify a driver this is the type of network you are using.

docker-network

The bridge network works as a private network internal to the host so containers on it can communicate. External access is granted by exposing ports to containers.

Bridge networks are used when your applications run in standalone containers that need to communicate.

In the picture above db and web can communicate with each other on a user created bridge network called mybridge .

If you’ve never added a network in Docker you should see something similar to this:

The default bridge network is listed, along with host and none .  We will ignore the other two, and use the bridge network when we get to the examples.

Docker Container IP Address

By default, the container is assigned an IP address for every Docker network it connects to. And each network is created with a default subnet mask, using it as a pool later on to give away the IP addresses.

Usually Docker uses the default 172.17. 0.0/16 subnet for container networking.

Now to better understand it, we will execute a real use case.

drawing

Docker Example

To illustrate this, we will use a Hive and Hadoop environment, containing 5 Docker Containers.

Check out the docker-compose.yml file we are about to execute:

From docker-hive GitHub

No one wants to read a HUGE config file, right? So here's a picture:

Screen-Shot-2020-06-21-at-2.48.18-PM

Much better! Now let's start up those containers:

We can see 5 containers:

Next let's check our Docker networks:

Wait a minute... there's a new network called docker-hive_default !

By default docker compose sets up a single network for your app. And your app’s network is given a name based on the “project name”, originated from the name of the directory it lives in.

So since our directory is named docker-hive , this explains the new network.

Next some examples on how to get the Docker IP Address.

How to Get A Docker Container IP Address - examples

And now that I have your attention, we are going to unveil the mystery.

drawing

1. Using Docker Inspect

Docker inspect is a great way to retrieve low-level information on Docker objects. You can pick out any field from the returned JSON in a fairly straightforward manner.

So shall we use it to get the IP Address from the dockerhive_datanode ?

Didn't you say that Docker uses the default 172.17. 0.0/16 subnet for container networking? Why is the returned IP Address: 172.18.0.5  outside it?

Screen-Shot-2020-06-22-at-3.25.07-PM

To answer that we have to look at our network settings:

We executed this example in a Compute Engine VM, and in this test, the docker network was assigned a different subnet: 172.18.0.0/16 . That explains it!

Furthermore, we can also lookup all IP Addresses inside the docker-hive_default network.

So we don't need to look up each Container's IP individually:

drawing

If you didn't notice, we used jq help to parse the Containers map object.

2. Using Docker exec

In the following example we will work with the dockerhive_namenode .

3. Inside the Docker Container

We can even find other containers' IP Addresses that are inside a container in the same network:

Hive mestastore

Hive server

All examples were executed in a linux distribution Compute Engine VM. If you execute them in macOS or Windows environments the sample commands might change a bit.

Also bear in mind that those IP Addresses in the examples given are internal to the sample docker-hive_default network. So if you have a use case to connect to those containers externally, you would need to use the host machine's external IP (assuming that you are exposing the containers ports correctly). Or if you are using kubernetes, for instance, to manage your Docker containers, let it handle the IP Addresses for you kubernetes-expose-external-ip-address ?.

* Illustrations from icons8.com by Murat Kalkavan .

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Specific ip address for containers via docker compose

I have my project configured to pick configuration at runtime. These configurations are fixed for the project as I am using the AWS cloud to deploy it. Configuration examples include the redis host, rabbit mq host etc. The values for this is fixed in my application as they are retrieved from a server, example

  • redis host = redis.int
  • rabbit mq host = rmq.int

Now with this, I have to setup my docker-compose to work like following:

The problem here is that my app loads config from an external server, from there we have a fixed value of the redis host and rabbitmq host, and in order to run this app on my local I have to assign specific ip address to redis and rabbitmq container. Does this looks good from a production perspective.

Assign static IP to a Docker container

There are two types of static IPs, public and private IP addresses. We all know the public IP Docker mapping by now, using Nginx and port mapping. Today we are going to see how can we assign a private IP address to a Docker container.

Prerequisites

Using docker compose, using docker cli.

Step 1 . Create a network first.

Step 2 . Spin up a container.

Step 3 . Verify the IP address assignment.

Using a private static IP address for a Docker container is not a good practice at all, but it could help you with debugging a local development environment stack. Although this is a hack around, always make sure to use the service name as part of the service endpoint reference. Feel free to leave a comment below and if you find this tutorial useful, follow our official channel on Telegram .

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Default list

Specify a project name

In Compose, the default project name is derived from the base name of the project directory. However, you have the flexibility to set a custom project name.

This page offers examples of scenarios where custom project names can be helpful, outlines the various methods to set a project name, and provides the order of precedence for each approach.

Note The default project directory is the base directory of the Compose file. A custom value can also be set for it using the --project-directory command line option .

Example use cases

Compose uses a project name to isolate environments from each other. There are multiple contexts where a project name is useful:

  • On a development host: Create multiple copies of a single environment, useful for running stable copies for each feature branch of a project.
  • On a CI server: Prevent interference between builds by setting the project name to a unique build number.
  • On a shared or development host: Avoid interference between different projects that might share the same service names.

Set a project name

Project names must contain only lowercase letters, decimal digits, dashes, and underscores, and must begin with a lowercase letter or decimal digit. If the base name of the project directory or current directory violates this constraint, alternative mechanisms are available.

The precedence order for each method, from highest to lowest, is as follows:

  • The -p command line flag.
  • The COMPOSE_PROJECT_NAME environment variable .
  • The top-level name: attribute in your Compose file. Or the last name: if you specify multiple Compose files in the command line with the -f flag.
  • The base name of the project directory containing your Compose file. Or the base name of the first Compose file if you if you specify multiple Compose files in the command line with the -f flag.
  • The base name of the current directory if no Compose file is specified.

What's next?

  • Read up on working with multiple Compose files .
  • Explore some sample apps .

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COMMENTS

  1. Assign Static IP to Docker Container and Docker-Compose

    2.1. How Docker Assigns an IP Docker first assigns an IP to each container, acting as a DHCP server. Furthermore, there are multiple DNS servers. Containers then process DNS requests with a server inside dockerd, which recognizes the names of other containers on the same internal network.

  2. Networking in Compose

    Each container can now look up the service name web or db and get back the appropriate container's IP address. For example, web 's application code could connect to the URL postgres://db:5432 and start using the Postgres database. It is important to note the distinction between HOST_PORT and CONTAINER_PORT .

  3. Provide static IP to docker containers via docker-compose

    4 Answers Sorted by: 209 Note that I don't recommend a fixed IP for containers in Docker unless you're doing something that allows routing from outside to the inside of your container network (e.g. macvlan). DNS is already there for service discovery inside of the container network and supports container scaling.

  4. How to Assign Static IP Addresses to Docker Compose Containers

    When we start Docker containers with Docker Compose, all the service containers in it will get dynamically assigned IP addresses. For example, if you run the containers in the below docker-compose.

  5. How to Assign a Static IP to a Docker Container

    First, you'll need to set up a Docker network, and since we care about the IP address, you'll need to specify a fixed subnet: docker network create --subnet=172.20../16 customnetwork Then, you can run a container, specifying the network with the --net flag, and specifying the IP with the -ip flag:

  6. Set a static IP for docker-compose containers

    The solution The solution is actually much easier than I expected, the only thing I had to do was setting the ipv4 address in my docker-compose.yml file, as below: networks: default: ipv4_address: 172.24..79

  7. Docker Compose Static IP configuration

    We assign the IP address 172.16.238.10 to the web container and the IP address 172.16.238.11 to the db container. Docker Compose will create the two containers as defined and use the IP addresses specified in the Docker Compose file. Below is a simple docker-compose.yml configuration used to deploy containers in the home lab environment.

  8. Assign a fixed IP address to a container in Docker-Compose

    First, create a network. Under networks, name the network you want to create. I will use route1_network this time. What matters is the subnet part. Specify the IP address you want to set here and ...

  9. Set specific IP addresses to docker containers created with docker-compose

    Using the ipam you can define a specific CIDR block for the new network, and then, attaching every container to that network, you can specify its IP address on that range. Now, test_1 is always run with the IP address 172.28.1.1, test_2 with 172.28.1.2 and test_3 with 172.28.1.3, and I'm able to hardcode those addresses in the config files.

  10. How to specifiy a static IP address with docker-compose.yml version 3

    Is it meanwhile possible to define a static subnet and a static IP address for each started Stack Exchange Network Stack Exchange network consists of 183 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

  11. Docker-Compose container ip address with container name

    1 Answer Sorted by: 13 I don't think that you are properly using environment variables. Please refer environment variables in compose. You can access one container from other container simply by using service name of that container. And this is the recommended way.

  12. Docker Compose static IP address in docker-compose.yml

    This was not a cascaded need where successor containers learn predecessors' IP addresses, but more like a full mesh. In Docker Engine 1.10 the docker run command received a new flag namely the --ip flag. This allows you to define a static IP address for a container at run time. Unfortunately, Docker Compose (1.6.2) did not support this option.

  13. How can I assign an IP address to a docker container different from the

    Objective: Assign fixed IP address to Docker container (Unifi Controller instance).. History: I fetched the unifi controller image from Docker Hub to my Synology Docker host. The container of the unifi controller runs properly if I attach it to the network of the host (not the default bridge). That blocks though multiple ports I need for other services (in the future).

  14. How to Get A Docker Container IP Address

    By default, the container is assigned an IP address for every Docker network it connects to. And each network is created with a default subnet mask, using it as a pool later on to give away the IP addresses. Usually Docker uses the default 172.17. 0.0/16 subnet for container networking. Now to better understand it, we will execute a real use case.

  15. How do I attach a macvlan network and assign a static Ip address in

    How do I attach a macvlan network and assign a static Ip address in compose file? Open Source Projects Compose sohojmanush (Sohojmanush) April 14, 2021, 1:28pm 1 My host IP is 192.168.88.3. I have created a macvlan network named "macvlan_network". My docker version is: Client: Docker Engine - Community Version: 20.10.5 API version: 1.41

  16. Specific ip address for containers via docker compose

    Specific ip address for containers via docker compose Docker Hub docker dhiman252 (Dhiman252) March 23, 2021, 1:41pm 1 I have my project configured to pick configuration at runtime. These configurations are fixed for the project as I am using the AWS cloud to deploy it. Configuration examples include the redis host, rabbit mq host etc.

  17. How can I set a static IP address in a Docker container?

    First you need to create you own docker network (mynet123) docker network create --subnet=172.18../16 mynet123. than simply run the image (I'll take ubuntu as example) docker run --net mynet123 --ip 172.18..22 -it ubuntu bash. then in ubuntu shell. ip addr. Additionally you could use.

  18. Assign static IP to a Docker container

    Step 1. Create a network first. docker network create --subnet=172.16.100./24 frontend_network Step 2. Spin up a container. docker run --net frontend_network --ip 172.16.100.11 -dit test_container Step 3. Verify the IP address assignment. docker inspect -f ' { {range.NetworkSettings.Networks}} { {.IPAddress}} { {end}}' test_container Conclusion

  19. Assign a Static IP to a Docker Container

    When a Docker container starts up, it gets a dynamic IP address by default. In this article, we will show you how to assign a static IP address to a specific Docker container. Create a new Docker network: $ docker network create --subnet=172.11../16 mycustomnetwork. You can run a docker container in this network with a specific (static) IP ...

  20. Assign static IP to Docker container

    290 I'm now trying to assign a static IP 172.17..1 when a Docker container be started up. I use port 2122 as the ssh port of this container so that I let this container listen port 2122. sudo docker run -i -t -p 2122:2122 ubuntu

  21. Specify a project name

    In Compose, the default project name is derived from the base name of the project directory. However, you have the flexibility to set a custom project name. This page offers examples of scenarios where custom project names can be helpful, outlines the various methods to set a project name, and provides the order of precedence for each approach.

  22. docker

    2 Answers Sorted by: 1 On your use-case the ipvlan docker network could work for you. using your assumptions about the host ip address and mask, you could create the network like this: docker network create -d ipvlan --subnet=172.18..1/16 \ -o ipvlan_mode=l2 my_network Then run your docker container within that network and assign an IP address:

  23. Connectivity from WSL2 to host by using actual IP

    docker run --rm busybox ping <IP of your Windows Host> -c 2 If this doesn't work, then you may have a DNS issue, Docker uses Google's DNS and if your network is using a different DNS or your network filters Google's DNS traffic then you'll need to tell docker about this. Find the IP address of the DNS server your Windows network is using.