When using docker run, the default rails app configuration assumes the existence of a $PORT environmental variable but does not tell the user that it is required. By making the lack of a definition for the environmental variable, the user can understand how to run the application properly.
When using
docker run, the default rails app configuration assumes the existence of a$PORTenvironmental variable but does not tell the user that it is required. By making the lack of a definition for the environmental variable, the user can understand how to run the application properly.Resolves #306