add linux-arm builds to releaser

[blumamir]

trafficstars

Fixes #105 . More context and discussions can be read in the issue.

This adds linux-arm builds to the collector and collector contrib, so they can be published to docker hub and consumed on raspberry pi which is running armv7.

This PR follows another PR for adding this architecture to the CI testing in collector repo here. For contrib, this architecture is also tested in CI here

I added the support by following the way it is done for other os-arch, so please review thoroughly as I have little experience with these tools.

Again, thank you @mx-psi for pointing me to the right places :)

[blumamir]

CI fails with:

format=rpm package=otelcol-contrib
   •calculating checksums
   •docker images
      • building docker image    image=otel/opentelemetry-collector-contrib:0.52.0-SNAPSHOT-6eeeed8-arm
      • building docker image    image=otel/opentelemetry-collector:0.52.0-SNAPSHOT-6eeeed8-arm
      • building docker image    image=otel/opentelemetry-collector:0.52.0-SNAPSHOT-6eeeed8-386
      • building docker image    image=otel/opentelemetry-collector:0.52.0-SNAPSHOT-6eeeed8-amd64
      • building docker image    image=otel/opentelemetry-collector:0.52.0-SNAPSHOT-6eeeed8-arm64
      • building docker image    image=otel/opentelemetry-collector-contrib:0.52.0-SNAPSHOT-6eeeed8-386
      • building docker image    image=otel/opentelemetry-collector-contrib:0.52.0-SNAPSHOT-6eeeed8-amd64
      • building docker image    image=otel/opentelemetry-collector-contrib:0.52.0-SNAPSHOT-6eeeed8-arm64
   ⨯release failed after 2054.19serror=docker build failed: failed to build otel/opentelemetry-collector-contrib:0.52.0-SNAPSHOT-6eeeed8-arm: exit status 1: #1 [internal] load build definition from Dockerfile

Any tips on how to debug this issue?

[mx-psi]

Can you add --debug here? https://github.com/open-telemetry/opentelemetry-collector-releases/blob/b26b0be133c006379069dc9025bdf15122249b2d/.github/workflows/ci-goreleaser.yaml#L47

It's hard to know what is happening with the current output

[jpkrohling]

On a Linux machine (and presumably others, like Mac), you can run "goreleaser" locally, which would produce better output and log files. Let me know if you can't figure out how to do it following goreleaser's documentation (and this repo's).

[mx-psi]

Modifying the QEMU setup will probably fix the issue (see #173)

[fidesachates]

What's the best way to make progress here? @blumamir do you plan on continuing or should someone else carry on? Seems like @mx-psi 's suggestion is an easy one to try.

[Wal8800]

Hey @blumamir are you looking to finish this pull request? I'm also interested in otel-contrib release for armv7.

I think for --platform argument, it should be linux/arm/v7 as that's what we have been using to build docker image for the raspberry pi.

[mx-psi]

Closing in favor of #349