Adding a hostname to a service in Docker-Compose
Every service container in Docker joins the default network. Other containers on that network can access it, and they can discover it using the hostname that is the same as the container name.
This article will discuss adding hostnames to our container services in docker-compose.
Adding a hostname to a service in Docker-Compose
As of docker-compose version 3.0, we can use the hostname key and add it to our YAML file. Make sure we have explicitly defined the version that docker-compose should use when running our services.
To determine the version, use the version key with a value of 3 or 3.0.
version: "3.0"
services:
sampleservice:
hostname: service-hostname
Without a version key, docker-compose will use the defaults of version 1 when running the service. With version 1, we will not set the hostname correctly.
However, there is a known issue where docker runthe hostname will not be visible to other containers if we execute the command. We can define an alias and assign a name to the container as a workaround.
To define an alias, first enable the defined alias by running the following command.
$ docker-compose run --use-aliases
Once this is running, we can use the alias key and include it in our YAML files.
version: "3.0"
services:
sampleservice:
networks:
samplenetwork:
aliases:
- alias1
- alias2
After that, manually assign the alias to the service using the following command.
$ docker-compose run --name alias1 sampleservice
For reprinting, please send an email to 1244347461@qq.com for approval. After obtaining the author's consent, kindly include the source as a link.
Related Articles
Copy files from host to Docker container
Publish Date：2025/03/25 Views：126 Category：Docker
-
This article will discuss and demonstrate methods we can use to transfer files from the host to a running container in Docker. docker cp Copy the file from the host to the Docker container using docker cp The command is one of the simplest
Get the IP address of the Docker container
Publish Date：2025/03/25 Views：102 Category：Docker
-
This article demonstrates how to get the IP address of a Docker container. Connect to the Bridge network and get the IP address of the Docker container One of the big reasons why docker containers are so convenient is that we can easily con
Uninstalling Docker on macOS
Publish Date：2025/03/25 Views：95 Category：Docker
-
Recently, we have seen widespread adoption of Docker as the ultimate containerization platform. Because of this, setting up Docker on all platforms has been greatly simplified, including macOS and Windows. However, some users usually face p
Enter the Docker container's shell
Publish Date：2025/03/25 Views：98 Category：Docker
-
This article will demonstrate how to enter the Docker container shell using multiple methods. Use docker exec to enter the Docker container's shell We need to have a container up and running to use this command. We can check the status of t
Listing containers in Docker
Publish Date：2025/03/25 Views：122 Category：Docker
-
This article will discuss various commands for listing containers created in our system. This means we should create some containers beforehand for these commands to return values. List all running containers in Docker We will start by list
Mount the host directory into the Docker container
Publish Date：2025/03/25 Views：189 Category：Docker
-
Docker provides, among other features, tools to work with the host operating system and the container file system. One of these features is the ability to persist data in containers and share data between containers by mounting directories
Docker build command with multiple parameters
Publish Date：2025/03/25 Views：138 Category：Docker
-
docker build The command allows us to create a Docker image from a Dockerfile. It also allows us to build an image from a context that references a set of files located in a location specified by a PATH or URL. A Dockerfile, on the other ha
The difference between CMD and ENTRYPOINT in Docker
Publish Date：2025/03/25 Views：141 Category：Docker
-
Docker containers have become the standard when it comes to managing software and dependencies in different environments. When working with real-world applications, you need to create a docker file before building your application container
Use the Dockerfile to create a directory in the container using the Mkdir command
Publish Date：2025/03/25 Views：73 Category：Docker
-
Docker containers have become the de facto way to manage software and dependencies in different environments. When working with real-world applications, you will undoubtedly need to create a Dockerfile before you can build your application
