Docker Container Failed to Create

If your custom Docker Container (i.e. one that is not found in the PRO Tools App Store) failed to create due to a 'version' error, then please make sure that a "version" element is defined in the top level of the Docker compose YAML file:

version: "3.0"
service:
  my_service:
  ...
  ...

It does not need to be specifically version 3.0 but any version of 3.x is fine.