Add helper script to start a docker development environment

Change-Id: I4bdf14df0f3924c2bf049fa8a82bf4fec12e7fda
Merge commit 'refs/changes/95/2495/1' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  Add helper script to start a docker development environment

Change-Id: I9f9229ded098258555f011878afbfaad6a6dbdd4
Tuleap 7.1.99.28

Change-Id: I3dae1b91049326eaa657c99d3b01389e7a6cc464