Make it easier to use Docker-related Task targets

[AlekSi]

Readiness checklist

• I added/updated unit tests.
• I added/updated integration/compatibility tests.
• I added/updated comments and checked rendering.
• I made spot refactorings.
• I updated user documentation.
• I ran task all, and it passed.
• I ensured that PR title is good enough for the changelog.
• (for maintainers only) I set Reviewers (@FerretDB/core), Assignee, Labels, Project and project's Sprint fields.
• I marked all done items in this checklist.

[w84thesun]

👍

[codecov]

Codecov Report

Merging #2358 (519741c) into main (207ba25) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2358   +/-   ##
=======================================
  Coverage   27.22%   27.22%           
=======================================
  Files         391      391           
  Lines       18987    18987           
=======================================
  Hits         5170     5170           
  Misses      13262    13262           
  Partials      555      555           

Flag	Coverage Δ
integration	4.79% <ø> (ø)
mongodb	4.79% <ø> (ø)
unit	25.88% <ø> (ø)

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