Hi, We missed a backport into the 1.3.0 release. This will cause missing environment variables from the Docker image. The patch has now been backported to the 1.3.x branch. If you are using Mesos Containerizer's docker image support, please wait for 1.3.1 release.
Details can be found in this ticket: https://issues.apache.org/jira/browse/MESOS-7692 - Jie
