Add docker login

.github/workflows/release.yaml

@@ -25,6 +25,13 @@ jobs:
           go-version-file: "./go.mod"
           check-latest: true
       - uses: ko-build/setup-ko@ace48d793556083a76f1e3e6068850c1f4a369aa # v0.6
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Build and publish webhook to GHCR
         id: build
         run: |