containers/mailcow/README.md

Overrides for mailcow-dockerized

Provides files that are meant to be copied into your location of the github.com/mailcow/mailcow-dockerized repo thereby customizing its behavior.

yq 'del( .services.[].environment.[] | select(. == "TZ=*") ) | del(.. | select( (tag == "!!map" or tag =="!!seq") and length == 0)) | del( .services.[].restart )' /opt/containers/mailcow-dockerized/docker-compose.yml | yq --indent 4 ea '. as $item ireduce ({}; . * $item )' - /opt/containers/mailcow-dockerized/docker-compose.override.yml > /opt/containers/mailcow-dockerized/docker-compose.final.yml

• Env variables

  yq 'del( .services.[].environment.[] | select(. == "TZ=*") ) | del(.. | select( (tag == "!!map" or tag =="!!seq") and length == 0))' ...
  

  From all .services.[].environment.[] lists remove items that match the expression TZ=*. Realistically this removes the TZ environment variable declaration and in some cases leaves the environment list empty. If the list now truly is empty delete it.

  Given a file:

  services:
      unbound-mailcow:
          image: mailcow/unbound:1.16
          environment:
              - TZ=${TZ}
          volumes:
              - ./data/hooks/unbound:/hooks:Z
  

  Step one does:

  services:
      unbound-mailcow:
          image: mailcow/unbound:1.16
     ---> environment:
          volumes:
              - ./data/hooks/unbound:/hooks:Z
  

  We detect that environment is now empty and delete it:

  services:
      unbound-mailcow:
          image: mailcow/unbound:1.16
     ---> volumes:
              - ./data/hooks/unbound:/hooks:Z
  

• Restart policy

  del( .services.[].restart ) ...
  

  From all services delete restart policy declaration. We're defaulting to unless-stopped via the extends: directive.