Environment variables not listed in debezium/connect image description

The environment variables that are taken into consideration when deploying Debezium Connect are not listed in the image description, although they are visible in Google metadata (screenshots for reference). They should be added.

Without this list it is not possible to deploy Connect without using the --link in docker run or "links" in docker compose for the database URL. The example tutorial does not mention how to pass the database (eg. postgres) url as an environment variable. 

Google metadata:

Dockerhub overview: