Fix multiarch build about cutsolver HOT 12 CLOSED

Maaaaaan, everything should have been so much easier with buildx or native multiplatform Docker Hub builds. It's still not released and every other solution does not work, is painful, or both.

• https://dev.to/zeerorg/build-multi-arch-docker-images-on-travis-5428
• https://medium.com/@quentin.mcgaw/cross-architecture-docker-builds-with-travis-ci-arm-s390x-etc-8f754e20aaef
• https://github.com/bubuntux/nordvpn/blob/master/.travis.yml
• https://medium.com/@artur.klauser/building-multi-architecture-docker-images-with-buildx-27d80f7e2408
  • https://gist.github.com/ArturKlauser/76c29a059f2a73783e77a3ce98cd23c2#file-multi-arch-docker-ci-sh

from cutsolver.

also consider docker/hub-feedback#1352

from cutsolver.

container was build a few more times but still has no tag showing other architectures. Did not work as expected, log shows the classical exec format error.

from cutsolver.

https://blog.hypriot.com/post/setup-simple-ci-pipeline-for-arm-images/

from cutsolver.

https://docs.travis-ci.com/user/docker/#pushing-a-docker-image-to-a-registry

from cutsolver.

moby/moby#36552

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https://lobradov.github.io/Building-docker-multiarch-images/

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https://github.com/Taisun-Docker/updater/blob/master/.travis.yml

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clone structure of https://github.com/ModischFabrications/wahlzeit/blob/master/.travis.yml

-> push only with tag, set hub tags equal instead of always using latest

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getting closer, but this time a timeout happened after 57 min. Yes, it really took that long, I'm removing some archs now

https://travis-ci.org/github/ModischFabrications/CutSolver/jobs/676748087

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follow up on travis-ci/travis-ci#8740, still won't work right now.

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test docker image health? -> waiting for 5m is bad, check it manually with curl.

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