Here is a fairly typical project structure you would find in one of our projects

    /.buildkite
    /.github
    /acceptance # for housing the acceptance level tests
      /bin # scripts to help
      /config # an anti-pattern, but we like a config package
        /config.go
      /tests
        / # misc go files for testing
      /$foo # any other packages directly related to tests or the environment
    /bin # any scripts to help with anything
    /cmd
     /$appname
        /main.go
      /$bar # any other installable binaries
    /config # an anti-pattern, but we like a config package
      /config.go
    /$raz # packages that support our service
    /internal # stuff we want to import but not let others import. Seldom used.
    /server # or $appname, our main service code
    .gitignore
    .Dockerfile
    README.md
    docker-compose.yml
    go.mod
    go.sum
    makefile