mount instead copy

Dockerfile

@@ -3,8 +3,6 @@ WORKDIR /app
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-COPY ./mysite ./mysite
-COPY ./polls ./polls
 COPY ./manage.py .
 
 RUN ./manage.py makemigrations

compose.yaml

@@ -6,6 +6,9 @@ services:
       - "8989:8000"
     depends_on: 
       - db
+    volumes:
+      ./mysite:/app/mysite
+      ./polls:/app/polls
     environment:
       DATABASE_NAME: ${DATABASE_NAME}
       DATABASE_USERNAME: ${DATABASE_USERNAME}