Update deploy.yml

Author: dogmania

.github/workflows/deploy.yml

@@ -26,7 +26,7 @@ jobs:
       - run: vercel pull --yes --environment=production --token ${{ secrets.VERCEL_TOKEN }}
 
       # vercel.json의 buildCommand/outputDirectory로 로컬 빌드
-      - run: vercel build --token ${{ secrets.VERCEL_TOKEN }}
+      - run: vercel build --prod --token ${{ secrets.VERCEL_TOKEN }}
 
       # 사전빌드물 배포
       - run: vercel deploy --prebuilt --prod --yes --token ${{ secrets.VERCEL_TOKEN }}