Cross-complie atmos

[Nuru]

what

• Use goreleaser to cross-compile and release
• Fix issues with Cross-compile atmos #33 that caused preparation step to fail

why

• Make binaries available for other platforms

notes

• At this time, Windows builds fail due to syscall in k-kinzal/[email protected] being undefined, so we are not yet distributing Windows binaries
• At this time, builds using go 1.16 fail due to an incompatibility with Variant 0.37.1, so we must use go 1.15 and cannot build binaries for Apple M1 because that requires go 1.16.
• The preferred way to set the version is by having the go linker set the value of a global variable, but there is currently no way to reference a global go variable inside a variant job.

references

• Please support go 1.16 mumoshu/variant2#48
• Please support Windows mumoshu/variant2#49
• Add a version command mumoshu/variant2#16
• Please document "context" object mumoshu/variant2#50