CircleCI config for passing CDN url to the Docker image.

The workflows need to split since we're passing different parameters to
the Docker build at the beginning of the workflow.

atst/app.py

@@ -298,6 +298,7 @@ def apply_json_logger():
         }
     )
 
+
 def register_jinja_globals(app):
     static_url = app.config.get("STATIC_URL", "/static/")
 
@@ -308,5 +309,4 @@ def register_jinja_globals(app):
         else:
             return flask_url_for(endpoint, **values)
 
-
     app.jinja_env.globals["url_for"] = _url_for