Make Dockerfied development environment compatible with macOS

[dhruvkb]

Description

This PR makes the Docker-based setup for Openverse usable on macOS. It has some rather major differences from the Linux-compatible implementation in #4343.

This PR

• drops user management entirely, running the container as the default user

  The original approach where user is being supplied to the container via --user is inherently incompatible with macOS because there is no docker group when running Docker containers on macOS either via Docker Compose or Orbstack.

• changes the preserved volume to target /opt instead of from $HOME

  This is a consequence of removing user management. This works in fundamentally the same way except that the tools need to be configured via env vars to use paths under /opt.

• removes redundant/autoinstalled packages, updates package explanations and fixes a typo in ov link command

Testing Instructions

Run the same testing instructions as #4343 using a Mac.

Checklist

• My pull request has a descriptive title (not a vague title likeUpdate index.md).
• My pull request targets the default branch of the repository (main) or a parent feature branch.
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no visible errors.
• I ran the DAG documentation generator (just catalog/generate-docs for catalog
  PRs) or the media properties generator (just catalog/generate-docs media-props
  for the catalog or just api/generate-docs for the API) where applicable.

Developer Certificate of Origin

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[sarayourfriend]

Merging this as is into the base branch, and then will push some additional fixes and simplifications. This is getting very close!