Provide a cli binary for macOS / darwin

[ankushagarwal]

The current alpha release only provides a cli binary for linux-amd64. Would be nice to have a build for macOS / darwin as well

/cc @gaocegege

[gaocegege]

Yeah, I will take a look. Or would you mind building a binary in macOS since I have no the environment?

[gaocegege]

/area ci
/priority p1

[ankushagarwal]

You don't need access to macOS to build macOS binaries

You can simply run this in your linux environment

env GOOS=darwin GOARCH=amd64 go build github.com/kubeflow/hp-tuning/cli

Reference : https://www.digitalocean.com/community/tutorials/how-to-build-go-executables-for-multiple-platforms-on-ubuntu-16-04

[gaocegege]

OK, thanks.

[gaocegege]

/assign @gaocegege

[gaocegege]

Added, thanks

[ankushagarwal]

Thank you!