fix bind mount prisma, auto hydrate empty folder

backend/docker-entrypoint.sh

@@ -1,6 +1,12 @@
 #!/bin/sh
 set -e
 
+# Auto-hydrate prisma directory when bind-mounted volume is empty
+if [ ! -f "/app/prisma/schema.prisma" ]; then
+	echo "Mount is empty. Hydrating /app/prisma from /app/prisma_template..."
+	cp -R /app/prisma_template/. /app/prisma/
+fi
+
 # Run migrations
 npx prisma migrate deploy