Update Dockerfile

backend/Dockerfile

@@ -3,7 +3,10 @@ FROM python:3.12-slim
 
 # Allows docker to cache installed dependencies between builds
 COPY requirements.txt requirements.txt
-RUN pip install --no-cache-dir -r requirements.txt
+
+# Set Google's DNS and install dependencies in the same RUN command
+RUN echo "nameserver 8.8.8.8" > /etc/resolv.conf && \
+    pip install --no-cache-dir -r requirements.txt
 
 # Mounts the application code to the image
 COPY . app
@@ -12,4 +15,4 @@ WORKDIR /app
 EXPOSE 8000
 
 # Runs migrations and starts the production server
-CMD ["sh", "-c", "python manage.py migrate && python manage.py runserver 0.0.0.0:8000"]
+CMD ["sh", "-c", "python manage.py migrate && python manage.py runserver 0.0.0.0:8000"]