build less and autoload files with docker

Change-Id: I2206f4413ff0ca3dac915b517c118840f333801c
Merge commit 'refs/changes/65/2865/2' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  build less and autoload files with docker
This is Tuleap 7.3.99.52

Change-Id: I96cda5a9b5204c9c4f232e08419c4a06dc914a7a