Fix ci for the backend

containers/backend/requirements.txt

@@ -2,7 +2,7 @@ Django==1.11.23
 django-cors-middleware==1.3.1
 djangorestframework==3.6.2
 djangorestframework-jwt==1.10.0
-psycopg2==2.8.3
+psycopg2-binary==2.8.3
 gunicorn==19.7.1
 djoser==0.5.4
 envparse==0.2.0