[Chore] Build Docker Images on pushes to develop, main (#444)

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Reviewed-on: enviPath/enviPy#444

entrypoint.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+set -e
+
+if [ "${SKIP_DJANGO_SETUP:-false}" != "true" ]; then
+  python manage.py migrate --no-input
+  python manage.py collectstatic --no-input
+fi
+
+exec "$@"