update publish-mcp action to use the other build docker flow

Author: ioanarm

.github/workflows/publish-mcp.yml

@@ -1,14 +1,14 @@
 name: Publish to MCP Registry
 
 on:
-  push:
-    tags:
-      - 'v*'  # Triggers on version tags like v1.0.0
+  workflow_run:
+    workflows: ["Build and Push Docker Image"]
+    types: [completed]
+    branches: [main]
 
 permissions:
   id-token: write  # Required for OIDC authentication
   contents: read
-  packages: write  # Required for publishing Docker images
 
 jobs:
   publish:
@@ -19,41 +19,16 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Set up Go
-        uses: actions/setup-go@v6
-        with:
-          go-version: stable
-          cache: false
-
-      - name: Run tests
-        run: make test-unit
-
-      - name: Build binary
-        run: make build
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Log in to Docker Hub
-        uses: docker/login-action@v3
-        with:
-          # These secrets need to be configured in GitHub repository settings
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-
       - name: Extract version from tag
         id: version
-        run: echo "VERSION=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
-
-      - name: Build and push Docker image
-        uses: docker/build-push-action@v5
-        with:
-          context: .
-          push: true
-          tags: |
-            grafana/mcp-grafana:${{ steps.version.outputs.VERSION }}
-            grafana/mcp-grafana:latest
-          platforms: linux/amd64,linux/arm64
+        run: |
+          # Get the tag from the triggering workflow
+          TAG=$(git describe --tags --exact-match HEAD 2>/dev/null || echo "")
+          if [ -z "$TAG" ]; then
+            echo "No tag found at HEAD"
+            exit 1
+          fi
+          echo "VERSION=$TAG" >> $GITHUB_OUTPUT
 
       - name: Install dependencies
         run: |

Dockerfile

@@ -1,7 +1,7 @@
 # Build stage
 FROM golang:1.24-bullseye AS builder
 
-LABEL io.modelcontextprotocol.server.name="grafana/mcp-grafana"
+LABEL io.modelcontextprotocol.server.name="io.github.grafana/mcp-grafana"
 
 # Set the working directory
 WORKDIR /app