title: Database url environement variable for Debezium Connect
body: <p>Where can I find the environment variables listed for the Debezium Connect docker image?</p>
  <p>In the example tutorial and example compose you link the containers (<code>postgres</code> or <code>mysql</code>) with the <code>--link</code> / <code>links</code> but I need to be able to inject an environemnt variable instead of the <code>link</code> property. I am using postgresql.</p>
  <p>The variables are not listed on dockerhub <a href="https://hub.docker.com/r/debezium/connect/" rel="nofollow noreferrer">https://hub.docker.com/r/debezium/connect/</a></p>