Add Helm chart and Kubernetes deployment configuration for Redmine MCP

.github/workflows/build.yml

@@ -9,12 +9,18 @@ jobs:
   build:
     runs-on: ubuntu-latest
     permissions:
-      contents: read
+      contents: write
       packages: write
 
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set image tag
+        id: tag
+        run: echo "value=sha-$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
@@ -36,6 +42,28 @@ jobs:
           file: container/Containerfile
           platforms: linux/amd64,linux/arm64
           push: true
-          tags: ghcr.io/${{ github.repository }}:latest
+          tags: ghcr.io/${{ github.repository }}:${{ steps.tag.outputs.value }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
+
+      - name: Bump chart version and set appVersion
+        id: chart
+        run: |
+          CURRENT=$(grep '^version:' helm/Chart.yaml | awk '{print $2}')
+          MAJOR=$(echo $CURRENT | cut -d. -f1)
+          MINOR=$(echo $CURRENT | cut -d. -f2)
+          PATCH=$(echo $CURRENT | cut -d. -f3)
+          NEW_VERSION="$MAJOR.$MINOR.$((PATCH + 1))"
+
+          sed -i "s/^version: .*/version: $NEW_VERSION/" helm/Chart.yaml
+          sed -i "s/^appVersion: .*/appVersion: \"${{ steps.tag.outputs.value }}\"/" helm/Chart.yaml
+
+          echo "version=$NEW_VERSION" >> $GITHUB_OUTPUT
+
+      - name: Commit and push chart update
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add helm/Chart.yaml
+          git commit -m "chore: chart ${{ steps.chart.outputs.version }}, appVersion ${{ steps.tag.outputs.value }} [skip ci]"
+          git push