fix pipeline

.gitea/workflows/docker.yaml

@@ -14,13 +14,17 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Extract registry host
+        id: registry
+        run: echo "host=$(echo ${{ github.server_url }} | sed 's|https\?://||')" >> "$GITHUB_OUTPUT"
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
       - name: Login to Gitea Container Registry
         uses: docker/login-action@v3
         with:
-          registry: ${{ github.server_url }}
+          registry: ${{ steps.registry.outputs.host }}
           username: ${{ github.repository_owner }}
           password: ${{ secrets.REGISTRY_TOKEN }}
 
@@ -28,7 +32,7 @@ jobs:
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: ${{ github.server_url }}/${{ github.repository }}
+          images: ${{ steps.registry.outputs.host }}/${{ github.repository }}
           tags: |
             type=ref,event=branch
             type=semver,pattern={{version}}