post c10 cleanup

backend/Dockerfile

@@ -12,7 +12,7 @@ COPY requirements.txt /code
 RUN target=/root/.cache/pip \
     pip3 install --root-user-action=ignore -q -r requirements.txt
 
-# Need to make this explicit as part of expansion, no migrations or venv
+# Dockerignore has this skip migrations, venv, sqlite db
 COPY . .
 
 ENV FLASK_APP microblog.py