enhancement: changes to Dockerfile to build with checksum

.github/workflows/docker_build_push.yml

@@ -30,7 +30,7 @@ jobs:
           echo "Checksum file retrieved successfully."
         else
           echo "Checksum file not found in Docker image. Create a dummy checksum file."
-          echo "dummychecksum" > filename.txt
+          echo "dummychecksum" > container_checksum.txt
 
         if ! cmp -s code_checksum.txt container_checksum.txt; then
           echo "Checksums do not match, proceed with build and pull."

backend/Dockerfile

@@ -5,6 +5,9 @@ WORKDIR /app
 COPY requirements.txt requirements.txt
 RUN pip install --no-cache-dir -r requirements.txt
 
+# Generate and store the checksum
+RUN find /app/ -type f -exec sha256sum {} + > app_checksum.txt
+
 COPY . .
 
 CMD ["gunicorn", "haengsha.wsgi:application", "--bind", "0.0.0.0:8000"]