I don't understand 'one process per container,' and as near as I can tell it is not enforced. It's just a guideline. I always thought 'one task per container'

I don't understand 'one process per container,' and as near as I can tell it is not enforced. It's just a guideline. I always thought 'one task per container' or 'one service per container' made sense, but Postgres for example has many processes and can easily be containerized. I am a bit of a Docker skeptic though. I wrote this on the subject: http://adamierymenko.com/docker-not-even-a-linker/ http://adamierymenko.com/docker-not-even-a-linker/ This is also indirectly about Docker and the reasons for it: http://adamierymenko.com/privileged-ports-are-causing-climate-change/ http://adamierymenko.com/privileged-ports-are-causing-climat...