Containerized unit tests

[fedepaol]

Is your feature request related to a problem?

This was raised in slack, where the speaker does not build because of

# go.universe.tf/metallb/internal/bgp/native
internal/bgp/native/native.go:564:38: undefined: unix.SOCK_CLOEXEC
internal/bgp/native/native.go:564:58: undefined: unix.SOCK_NONBLOCK
internal/bgp/native/native.go:588:50: undefined: unix.SetsockoptTCPMD5Sig

According to golang/go#30539 (comment) , there are simply primitives that are not available in macos.

Describe the solution you'd like

Having a way to run unit tests inside containers (possibly via inv), so developers using mac can run unit tests.
This might be challenging because of the dockertest frr semi-integration tests.

Additional context

No response

I've read and agree with the following

• I've checked all open and closed issues and my request is not there.
• I've checked all open and closed pull requests and my request is not there.

[7h3-3mp7y-m4n]

can i work on this? , and can you assist me too when I'll face some issues while fixing this

[fedepaol]

Sure thing, and of course we'll help you!

[7h3-3mp7y-m4n]

thanks @fedepaol