Avoid 'port collision'

[Eduardo-Morales-Alberti]

• Problem description When tries to up a project using traefik container, it collides with any other port that may match.

ERROR: for traefik  Cannot start service traefik: driver failed programming external connectivity on endpoint example_traefik (128fe0fe0b5fb6ed9313d45deac65dbff40db50722d72332f7dae2d770b7e68f): Bind for 0.0.0.0:8444 failed: port is already allocated
ERROR: Encountered errors while bringing up the project.

• Issue reference https://stackoverflow.com/questions/48281970/how-do-i-avoid-port-collision-when-using-docker#answer-48282026

• Original docker documentation https://docs.docker.com/compose/compose-file/compose-file-v3/#ports

  Either specify both ports (HOST:CONTAINER), or just the container port (an ephemeral host port is chosen).

• Proposed solution:

Do not set the external port, only the internal docker port. Example:

  traefik:
    ports:
     - '80'
     - '443'

Then show the url, and set it on the multiple files, like local.drush.yml

docker-compose port traefik 80
0.0.0.0:32769

[Eduardo-Morales-Alberti]

Related pull request https://github.com/Metadrop/scripthor/pull/10

[omarlopesino]

Thanks! We can consider this finished as the MR is merged, and the boilerplate requires the latest version of the library. Closing.