When installing tools via go get (e.g. golint) they can not be ran without adding $GOPATH/bin to $PATH beforehand.

So for using e.g. golint one would need to write a step:

- run: |
    export PATH=$PATH:$(go env GOPATH)/bin
    go get -u golang.org/x/lint/golint
    golint -set_exit_status ./...

It would be cool, if setup-go could already do the export PATH=$PATH:$(go env GOPATH)/bin part, as this is a common need.