- Make sure to send the subdirectory when restarting a build

- Make sure to use the subdirectory to read the Dockerfile's location in a build package, and display the path
- Nicer UI for showing the trigger description in the build view
- Fix an NPE in the file change tree

endpoints/api.py

@@ -1239,7 +1239,10 @@ def request_repo_build(namespace, repository):
   permission = ModifyRepositoryPermission(namespace, repository)
   if permission.can():
     logger.debug('User requested repository initialization.')
-    dockerfile_id = request.get_json()['file_id']
+    request_json = request.get_json()
+
+    dockerfile_id = request_json['file_id']
+    subdir = request_json['subdirectory'] if 'subdirectory' in request_json else ''
 
     # Check if the dockerfile resource has already been used. If so, then it
     # can only be reused if the user has access to the repository for which it
@@ -1255,7 +1258,7 @@ def request_repo_build(namespace, repository):
     display_name = user_files.get_file_checksum(dockerfile_id)
 
     build_request = start_build(repo, dockerfile_id, ['latest'], display_name,
-                                '', True)
+                                subdir, True)
 
     resp = jsonify(build_status_view(build_request, True))
     repo_string = '%s/%s' % (namespace, repository)