ci: add docker build to release

.github/workflows/release.yaml

@@ -30,6 +30,12 @@ jobs:
         with:
           install-only: true
 
+      - name: Docker login
+        run: |
+          REGISTRY="${GITHUB_SERVER_URL#https://}"
+          echo "${{ secrets.PACKAGES_TOKEN }}" | docker login "$REGISTRY" -u "${{ github.repository_owner }}" --password-stdin
+          echo "DOCKER_REGISTRY=$REGISTRY" >> "$GITHUB_ENV"
+
       - name: Run GoReleaser
         run: |
           unset GITHUB_TOKEN
@@ -37,3 +43,4 @@ jobs:
         env:
           GITEA_TOKEN: ${{ secrets.PACKAGES_TOKEN }}
           GPG_FINGERPRINT: ${{ steps.import_gpg.outputs.fingerprint }}
+          DOCKER_ORG: ${{ github.repository_owner }}