Docker run command should use the Google Project ID, not your Google ID.

[ourpalal]

For Lab 03, in the section "Push container image to Google Container Registry and re-run",
added a note to check to see the port has been bound before issuing the docker run command.

`The command, $ docker run -d -p 8081:30100 gcr.io//node-svc:latest
should use the Google Project ID, not your Google ID.