fix: add permission changes for store_creds volume in Dockerfile

Dockerfile

@@ -20,6 +20,9 @@ RUN useradd --create-home --shell /bin/bash app \
     && chown -R app:app /app
 USER app
 
+# Give read access to the store_creds volume
+RUN chmod -R 755 /app/store_creds
+
 # Expose port (use default of 8000 if PORT not set)
 EXPOSE 8000
 # Expose additional port if PORT environment variable is set to a different value