Fix flask port env var

.bashrc

@@ -32,7 +32,7 @@ export X509_USER_CERT="$HOME/.globus/usercert.pem"
 export X509_USER_KEY="$HOME/.globus/userkey.pem"
 
 # Configuration for GWCelery web applications.
-export FLASK_PORT=5556
+export FLASK_RUN_PORT=5556
 export FLASK_URL_PREFIX=/gwcelery
 export FLOWER_PORT=5555
 export FLOWER_URL_PREFIX=/flower

gwcelery/tests/test_tools_flask.py

@@ -10,7 +10,7 @@ def test_flask_run(monkeypatch):
     """Test starting the Flask server from the command line."""
     mock_run_simple = Mock()
     monkeypatch.setattr('werkzeug.serving.run_simple', mock_run_simple)
-    monkeypatch.setenv('FLASK_PORT', '5556')
+    monkeypatch.setenv('FLASK_RUN_PORT', '5556')
     monkeypatch.setattr(celery_app.log, 'setup', Mock())
 
     with pytest.raises(SystemExit) as excinfo:

gwcelery/tools/flask.py

@@ -21,7 +21,8 @@ def maybe_detached(*, detach, **kwargs):
     return detached(**kwargs) if detach else nullcontext()
 
 
-@click.group(cls=CeleryDaemonFlaskGroup, help=__doc__)
+@click.group(cls=CeleryDaemonFlaskGroup, help=__doc__,
+             context_settings={'auto_envvar_prefix': 'FLASK'})
 @click.option('-D',
               '--detach',
               cls=CeleryOption,