Adding gunicorn

scheduler/requirements.txt

@@ -38,6 +38,7 @@ gitchangelog==3.0.4
 gitdb==4.0.10
 GitPython==3.1.29
 greenlet==2.0.1
+gunicorn==20.1.0
 idna==3.4
 iniconfig==1.1.1
 ipdb==0.13.9
@@ -67,9 +68,9 @@ pluggy==1.0.0
 prometheus-client==0.15.0
 prometheus-flask-exporter==0.21.0
 prompt-toolkit==3.0.33
+psycopg-binary==3.1.8
 ptyprocess==0.7.0
 pure-eval==0.2.2
-psycopg-binary==3.1.8
 pycodestyle==2.10.0
 pyflakes==3.0.1
 Pygments==2.13.0