Make hashes between up and configure consistent

[mattwalo32]

What I did
Currently, when docker compose config --hash [service] computes a hash for the service, it deletes all other services before computing the hash. That means if a service depends on another service, the DependsOn field gets deleted, causing the hash to be different than when docker up creates the labels.

I prevented the dependencies from getting deleted before hash computation to fix this.

I also noticed that docker up does some modification to the platform of the image before doing the hash (I.e. if no platform was specified in the yaml file, the default one is set). docker config doesn't do this at all. So I modified docker config to apply these modifications before computing the hash.

It could be argued that config shouldn't call applyPlatform. Take the scenario where a compose file contains services that don't have a platform specified. If that same file is run on two different machines with different default platforms, the hashes will be different. Personally, I think the hashes for the identical files should be different because they'll run on different platforms, but would love to get some feedback on that.

Related issue
Fixes #10907

(not mandatory) A picture of a cute animal, if possible in relation to what you did

[codecov]

Codecov Report

Attention: 10 lines in your changes are missing coverage. Please review.

Comparison is base (12e0ac8) 57.55% compared to head (c37d032) 57.91%.
Report is 2 commits behind head on main.

❗ Current head c37d032 differs from pull request most recent head b773c54. Consider uploading reports for the commit b773c54 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11010      +/-   ##
==========================================
+ Coverage   57.55%   57.91%   +0.36%     
==========================================
  Files         129      129              
  Lines       11229    11124     -105     
==========================================
- Hits         6463     6443      -20     
+ Misses       4136     4047      -89     
- Partials      630      634       +4     

Files	Coverage Δ
cmd/compose/config.go	33.33% <0.00%> (-1.03%)	⬇️

... and 10 files with indirect coverage changes

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[ndeloof]

nice catch! and thanks for investigating this issue

[AkihiroSuda]

Commit a345515 broke docker compose config --hash=*

• [BUG] regression in v2.23.0: docker compose config --hash=* prints empty result #11145