ci: use DOCKER_PAT secret

.gitea/workflows/release.yml

@@ -23,12 +23,20 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
+      - name: Debug token length
+        run: |
+          echo "Token length: ${#TOKEN}"
+          echo "First char code: $(printf '%d' "'${TOKEN:0:1}")"
+          echo "Last char code: $(printf '%d' "'${TOKEN: -1}")"
+        env:
+          TOKEN: ${{ secrets.DOCKER_PAT }}
+
       - name: Login to Gitea Registry
         uses: docker/login-action@v3
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ env.REGISTRY_USER }}
-          password: ${{ secrets.REGISTRY_TOKEN }}
+          password: ${{ secrets.DOCKER_PAT }}
 
       - name: Extract version
         id: meta