Update Dockerfile

Dockerfile

@@ -42,10 +42,7 @@ COPY ./ .
 
 # Start Redis server and PostgreSQL in the background
 RUN service redis-server start \
-    && service postgresql start \
-    && su -u postgres psql -c "CREATE USER postadmin WITH PASSWORD 'postpass';" \
-    && su -u postgres psql -c "CREATE DATABASE siksalaya;" \
-    && su -u postgres psql -c "GRANT ALL PRIVILEGES ON DATABASE sikshyalaya TO postadmin;"
+    && service postgresql start 
 
 # Switch back to a non-root user for security
 USER appuser