more docker improvements

docker/docker-compose.dev.yml

@@ -5,6 +5,16 @@ services:
   web:
     env_file:
       - ../.env.dev
+    # Development: run Django's autoreloading development server instead of
+    # the production entrypoint/gunicorn. Mount the repository into the
+    # container so code edits on the host trigger Django's autoreload.
+    entrypoint: ["python", "manage.py", "runserver", "0.0.0.0:8000"]
+    # Clear any command set by the prod compose file (which would be passed
+    # as an extra argument to manage.py). Setting an empty command prevents
+    # the image `command` from being appended to the entrypoint.
+    command: []
+    volumes:
+      - ../:/usr/src/app:cached
   nginx:
     # Development nginx override: mount a simplified config that does not
     # reference LetsEncrypt certs so the container can start without real