Change Details

Build and run the blob service, play with `--port` CLI option to ensure it changes ports.

Build and run the blob service, play with `--grpc-port` CLI option to ensure it changes ports. The new `--http-port` will be tested when HTTP server is introduced (two diffs later)

Build and run the blob service, play with `--grpc-port` CLI option to ensure it changes ports. The new `--http-port` will be tested when HTTP server is introduced (two diffs later)