Top to bottom review of libtask_docker.py

[gpsaggese]

We want to read the entire code and look for design flow, bugs, missing unit tests, etc.

• [ ] @gpsaggese
• [ ] @samarth9008
• [ ] @dremdem
• [ ] @heanhsok

[dremdem]

High level comments:

todo

• docker_stats():
  • order by RAM desc. Reason: to find the top most consumers of RAM
  • filter by current user
• docker_ps():
  • filter by current user
• docker_login():
  • add GHCR target_registry

to move

• move from helpers.lib_tasks_docker_release
  • _list_images()
  • _build_multi_arch_image()