Crossbuild docker image for different architectures (#55)
* Crossbuild docker image
* Fix yaml syntax
* Github Actions timeout disabled
* Add linux/386, linux/arm/v6, linux/arm/v7, linux/ppc64le, linux/s390x docker images
* Remove linux/386, linux/ppc64le, linux/s390x docker images
* Remove "Github Packages" from build step name
Co-authored-by: Chris C. <twin@twinnation.org>
* Split workflow file to test/docker
* Forward RELEASE variable to GITHUB_ENV
* Bring back timeout for tests
Co-authored-by: Chris C. <twin@twinnation.org>