Integrate GOSU or an alternative

[jclaveau]

• http://www.inanzzz.com/index.php/post/dna6/unning-docker-container-with-a-non-root-user-and-fixing-shared-volume-permissions-with-gosu
• Try gosu https://github.com/tianon/gosu
• Investigate User Namespaces https://success.docker.com/article/introduction-to-user-namespaces-in-docker-engine

[jclaveau]

Gosu usage example with jenkins https://github.com/sudo-bmitch/jenkins-docker/blob/master/Dockerfile