Remove the dev part of the Dockerfile

Summary:
The docker image will be capable to create a docker server how dont
store his content in ram like the dev one.

Ref T1755

Test Plan:
docker build .
docker run

Reviewers: dereckson, DorianWinty

Reviewed By: dereckson, DorianWinty

Maniphest Tasks: T1755

Differential Revision: https://devcentral.nasqueron.org/D2766