ref: only fully rebuild on requirements change

docker/Dockerfile

@@ -1,6 +1,6 @@
 FROM python:3.8-bullseye
 
-COPY . /app/geodata
+COPY ./requirements.txt /app/requirements.txt
 
 
 RUN pip install --upgrade pip
@@ -11,6 +11,8 @@ RUN pip install gunicorn uvicorn
 RUN curl --location https://raw.githubusercontent.com/vishnubob/wait-for-it/81b1373f17855a4dc21156cfe1694c31d7d1792e/wait-for-it.sh > /usr/bin/wait-for-it \
     && chmod +x  /usr/bin/wait-for-it
 
+COPY . /app
+
 EXPOSE 8000
 
 WORKDIR /app
@@ -18,7 +20,7 @@ WORKDIR /app
 CMD [ \
     "/usr/bin/wait-for-it", "postgres:5432", "--timeout=45", "--strict", \
     "--", \
-    "sh", "-c" \
+    "sh", "-c", \
     # might use exact migration hash here instead of upgrading to the latest "heads"
     "alembic upgrade heads \
     && \