Imports
- github.com/karrick/godirwalk
- go.uber.org/zap
- golang.org/x/net/context
- golang.org/x/oauth2
- golang.org/x/oauth2/google
- golang.org/x/oauth2/jwt
- golang.org/x/sync/errgroup
- golang.org/x/sync/semaphore
- google.golang.org/api/firebasehosting/v1beta1