Question 339792 in Docker Question posted in
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How to get Docker Container Name inside the docker?

I am running a Python application inside of a python:3.11.2-alpine container.

The Python application needs information about the container name within the running container.

I have read about how to get the general container information

Mostly the answers are how to get the container id (e.g. by environment variable HOSTNAME).
But there is also the need for the specific container name (see the last column in the following code block).

CONTAINER ID   IMAGE                COMMAND        CREATED        STATUS                    PORTS   NAMES
3b7ef8f1d979   myfancyimage:0.0.9   "/bin/sh..."   22 hours ago   Up 22 hours (unhealthy)           myfancyname

I have also checked the additional environment variables inside the container, but I have not found any information about the container name.

Is there a way to get the container name?

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2

Answers


  1. 0

    In my running Docker instance, running hostname does give the container name, not the container ID. In my case the name has the short-form ID appended to it for convenience, so it has the form <my_container_name>-<shortID>.
    Could you share a code snippet showing how you are getting the ID and container names?
    https://docs.docker.com/engine/reference/run/#container-identification

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  2. 0

    The --name option sets a custom name to identify your container on the Docker host, the -h, --hostname option sets the container’s hostname.

    You could set both options to get the information from the $HOSTNAME environment variable inside your container:

    $ docker run --rm --name myfancyname -h myfancyname -it myfancyimage env
HOSTNAME=myfancyname
TERM=xterm
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