DO NOT MERGE: refresh Dockerfile a little

Dockerfile

@@ -1,4 +1,5 @@
-FROM python:3.6
+FROM uisautomation/django:2.0-py3.6
+RUN apk add --no-cache bash
 
 WORKDIR /usr/src/app
 
@@ -8,4 +9,4 @@ RUN pip install -r ./requirements_docker.txt
 ADD ./ /usr/src/app/
 
 ENV DJANGO_SETTINGS_MODULE=lookupproxy.settings.docker
-ENTRYPOINT ["scripts/docker-entrypoint.sh"]
+ENTRYPOINT ["./scripts/docker-entrypoint.sh"]

README.md

@@ -20,3 +20,12 @@ This application ships with a basic packaging using Docker. It makes use of
 container is configured to use lookupproxy.settings.docker by default as the
 Django settings. In use you probably want to override this with a settings
 module which includes at least the OAuth2 configuration and SECRET_KEY setting.
+
+The following environment variables are mapped to the corresponding Django
+settings:
+
+* ``OAUTH2_TOKEN_URL``
+* ``OAUTH2_INTROSPECT_URL``
+* ``OAUTH2_CLIENT_ID``
+* ``OAUTH2_CLIENT_SECRET``
+* ``OAUTH2_INTROSPECT_SCOPES`` (scopes should be separated by spaces)

lookupproxy/settings/docker.py

@@ -1,4 +1,5 @@
 from .base import *  # noqa: F403
+import os
 
 DEBUG = False
 ALLOWED_HOSTS = ['*']
@@ -11,3 +12,39 @@
 
 # In production, use the production lookup
 LOOKUP_API_ENDPOINT_HOST = 'www.lookup.cam.ac.uk'
+
+# Load OAuth2 settings from environment if present
+OAUTH2_TOKEN_URL = os.environ.get('OAUTH2_TOKEN_URL', None)
+OAUTH2_INTROSPECT_URL = os.environ.get('OAUTH2_INTROSPECT_URL', None)
+OAUTH2_CLIENT_ID = os.environ.get('OAUTH2_CLIENT_ID', None)
+OAUTH2_CLIENT_SECRET = os.environ.get('OAUTH2_CLIENT_SECRET', None)
+OAUTH2_INTROSPECT_SCOPES = os.environ.get('OAUTH2_INTROSPECT_SCOPES', '').split(' ')
+
+# Logging
+LOGGING = {
+    'version': 1,
+    'disable_existing_loggers': False,
+    'formatters': {
+        'verbose': {
+            'format': ('%(levelname)s %(asctime)s %(pathname)s:%(lineno)d '
+                       '%(funcName)s "%(message)s"')
+        },
+        'simple': {
+            'format': '%(levelname)s "%(message)s"'
+        },
+    },
+    'handlers': {
+        'console': {
+            'level': 'INFO',
+            'class': 'logging.StreamHandler',
+            'formatter': 'verbose',
+        },
+    },
+    'loggers': {
+        'django': {
+            'handlers': ['console'],
+            'propagate': True,
+            'level': 'INFO'
+        },
+    }
+}