As part of future changes, we want to extract system package managers'
packages in `Dockerfile`s more generally.
Instead of an `apk`-specific file, we can introduce a shared file for
extracting commands from `RUN`s.
From here, it can then be used by `apk` and follow-up tools by providing
the `names` to look for.
Co-authored-by: Claude Opus 5 <jamie.tanna+claude-code@mend.io>
Jamie Tanna