Docker updates about mount

[Gustry]

Minor changes from #5168, which were not strictly related to QJazz

[dmarteau]

LGTM

[3liz-bot]

The backport to release_3_6 failed:

The process '/usr/bin/git' failed with exit code 1

stderr

error: could not apply e6886b700... Docker updates about mount
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".
hint: Disable this message with "git config advice.mergeConflict false"

stdout

Auto-merging .gitlab-ci.yml
Auto-merging tests/docker-compose.yml
CONFLICT (content): Merge conflict in tests/docker-compose.yml

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-release_3_6 release_3_6
# Navigate to the new working tree
cd .worktrees/backport-release_3_6
# Create a new branch
git switch --create backport-5203-to-release_3_6
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick e6886b700987b6cfe3639f229b8470d252d05866
# Push it to GitHub
git push --set-upstream origin backport-5203-to-release_3_6
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-release_3_6

Then, create a pull request where the base branch is release_3_6 and the compare/head branch is backport-5203-to-release_3_6.