Perform best practice of cleaning up apt-get files
From https://docs.docker.com/engine/userguide/eng-image/dockerfile_best-practices/
Image shrunk from 365.2 -> 327.7 MB
Edited by GitLab Release Tools Bot
From https://docs.docker.com/engine/userguide/eng-image/dockerfile_best-practices/
Image shrunk from 365.2 -> 327.7 MB