feat: multi-arch docker images

[caarlos0]

• first impl
• tests
• docs
• refine impl/api probably after reviews 👼
• manifest push sometimes fails on my machine, seems to be related to OSX: manifest blob unknown: blob unknown to registry pushing linux image distribution/distribution#3100
• goreleaser multi-arch images?

closes #530

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[caarlos0]

I heard @gianarb will be happy to see this...

[codecov]

Codecov Report

Merging #1923 (1c46891) into master (d2f4cb7) will increase coverage by 0.15%.
The diff coverage is 95.55%.

@@            Coverage Diff             @@
##           master    #1923      +/-   ##
==========================================
+ Coverage   81.70%   81.85%   +0.15%     
==========================================
  Files          73       74       +1     
  Lines        3880     3925      +45     
==========================================
+ Hits         3170     3213      +43     
- Misses        582      583       +1     
- Partials      128      129       +1     

Impacted Files	Coverage Δ
internal/pipe/docker/docker.go	91.78% <ø> (ø)
internal/pipe/publish/publish.go	75.00% <ø> (ø)
pkg/config/config.go	93.75% <ø> (ø)
internal/pipe/docker/manifest.go	95.55% <95.55%> (ø)

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[ryancurrah]

I do not see any annotations being created in the manifest pipe after creating the manifest:

docker manifest annotate 45.55.81.106:5000/coolapp:v1 45.55.81.106:5000/coolapp-arm-linux --arch arm.

[caarlos0]

it creates with docker manifest create and already amends all given images in a single command...

[ryancurrah]

Ah cool! I read the Docker manifest docs this morning after getting notified about the recent goreleaser release and digging into this new feature. It was not clear if the annotations had to be manually set. I did look around for clearer docs but not to much info about manifests atm.

[oldthreefeng]

youre doing great job~

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.