Automatically allow go binary in goland to listen on MacOS

Everytime you compile a go binary in goland and start it, MacOS will ask you to allow the binary to listen for incoming connection, which can quickly become a nuisance. To always allow the binary, do two things

Listen only on “localhost”

Set the execution environment to HOST=”localhost” for gin

Code sign the executable before launch

Voilà! No more prompts!