mysql: ENV HOME=/ inappropriately overrides $HOME

[rfay]

Name and Version

bitnami/mysql

What architecture are you using?

arm64

What steps will reproduce the bug?

docker run -it --rm --entrypoint=bash -u 34:34 bitnami/mysql:8.0
id
uid=34(backup) gid=34(backup) groups=34(backup)
grep backup /etc/passwd
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin

echo $HOME
/

What is the expected behavior?

HOME should be the home directory of the user

What do you see instead?

HOME is always set to /, as a result of the ENV HOME=/ in https://github.com/bitnami/containers/blob/main/bitnami/mysql/8.0/debian-12/Dockerfile#L21-L24

Additional information

DDEV's ddev-dbserver adds an extra layer to bitnami/mysql:8.0 with a user matching the host user. But it doesn't work right because $HOME is broken.

In added layer ENV HOME="" resolves this problem, but I don't think the ENV HOME=/ is appropriate in any case.

[dgomezleon]

Hi @rfay

Note you always can adapt env variables for your deployment (e.g. using docker-compose.yaml).

If you want to contribute a solution with a different proposal, we welcome you to create a pull request. The Bitnami team is excited to review your submission and offer feedback. You can find the contributing guidelines here.

Your contribution will greatly benefit the community. Feel free to reach out if you have any questions or need assistance.

[rfay]

I'm happy to do a PR removing HOME. I'm pretty sure it doesn't ever make sense to pre-emptively set it like this. I guess I'd assume somebody once had a reason for it.