Add CI step to publish image to GAR

.github/workflows/build-image.yml

@@ -0,0 +1,34 @@
+name: CI
+on:
+  push:
+    branches:
+      - main
+
+# These permissions are needed to assume roles from Github's OIDC.
+permissions:
+  contents: read
+  id-token: write
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name:  Image tag
+        id: image-tag
+        run: echo "version=$(./image-tag)" >> $GITHUB_OUTPUT
+
+      - name: Build and push to GAR
+        uses: grafana/shared-workflows/actions/push-to-gar-docker@main
+        id: push-to-gar
+        with:
+          platforms: linux/amd64,linux/arm64
+          file: ./Dockerfile
+          tags: |
+            "${{ steps.image-tag.outputs.version }}"
+            "latest"
+          image_name: "mcp-grafana"
+          environment: "dev"

Makefile

@@ -0,0 +1,3 @@
+.PHONY: build-image
+build-image:
+	docker build -t mcp-grafana:latest .

README.md

@@ -90,6 +90,18 @@ To run the server, use:
 uvx --from . mcp-grafana
 ```
 
+You can also run the server using docker. To build the image, use
+
+```
+make build-image
+```
+
+And to run the image, use:
+
+```
+docker run -it --rm mcp-grafana:latest --port-forward 8000:8000
+```
+
 ### Testing
 
 TL;DR: start a Grafana instance with `docker-compose up`, run `uv run ruff check .` for lints, and `uv run pytest tests --integration` to run unit and integration tests.

image-tag

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+WIP=$(git diff --quiet || echo '-WIP')
+BRANCH=$(git rev-parse --abbrev-ref HEAD | sed 's#/#-#g')
+# When 7 chars are not enough to be unique, git automatically uses more.
+# We are forcing to 7 here, as we are doing for grafana/grafana as well.
+SHA=$(git rev-parse --short=7 HEAD | head -c7)
+
+# If not a tag, use branch-hash else use tag
+TAG=$((git describe --exact-match 2> /dev/null || echo "") | sed 's/v//g')
+
+if [ -z "$TAG" ]
+then
+      echo ${BRANCH}-${SHA}${WIP}
+else
+      echo ${TAG}
+fi