bump container from python 3.8.6 to 3.8.7, revert gunicorn

There are a slew of issues related to eventlet monkeypatching ssl.py which leads to the issues we've seen in the updates I pushed to dev this week. The gunicorn update to 20 seems to be the culprit here, and wasn't caught locally because "develop" in djangoctl.sh uses the django runserver, not gunicorn.

Hopefully this fixes our issues, and I'll slowly update eventlet, requests, and urllib3 back up
 
Signed-off-by: Corey Shields <cshields@gmail.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.8.6
+FROM python:3.8.7
 MAINTAINER SatNOGS project <dev@satnogs.org>
 
 WORKDIR /workdir/

requirements.txt

@@ -35,10 +35,10 @@ djangorestframework==3.12.2
 dnspython==1.16.0
 ecdsa==0.14.1
 enum34==1.1.10
-eventlet==0.30.0
+eventlet==0.29.1
 frozendict==1.2
 greenlet==0.4.17
-gunicorn==20.0.4
+gunicorn==19.9.0
 h5py==3.1.0
 idna==2.10
 importlib-metadata==1.7.0

setup.cfg

@@ -30,7 +30,7 @@ install_requires =
     celery~=4.3.0
     # Deployment
     mysqlclient~=2.0.0
-    gunicorn[eventlet]~=20.0.0
+    gunicorn[eventlet]~=19.9.0
     # Cache
     django-redis-cache~=3.0.0
     # Logging
@@ -79,6 +79,7 @@ install_requires =
     # pinning for auth0 bug
     urllib3==1.25.11
     requests==2.24.0
+    eventlet==0.29.1
 
 [options.extras_require]
 dev =