Chore: 도커 이미지 레지스트리 수정

Author: dungbik

.github/workflows/cd.yml

@@ -13,18 +13,23 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Login to DockerHub
-        run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.ORG_PAT }}
 
       - name: Extract Docker image metadata
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: dungbik/flipnote-user
+          images: ghcr.io/dungbik/flipnote-user
+
       - name: Build and push Docker image
         uses: docker/build-push-action@v6
         with:
           context: .
           push: true
           tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          labels: ${{ steps.meta.outputs.labels }}