Merge pull request #1811 from aledbf/inject_app_and_tag

feat(controller): inject app name and tag version in image env.

Author: Matthew Fisher

controller/registry/private.py

@@ -53,6 +53,8 @@ def publish_release(source, config, target):
     # construct the new image
     image['parent'] = image['id']
     image['id'] = _new_id()
+    config['DEIS_APP'] = target_image
+    config['DEIS_RELEASE'] = target_tag
     image['config']['Env'] = _construct_env(image['config']['Env'], config)
     # update and tag the new image
     _commit(target_image, image, _empty_tar_archive(), target_tag)