Fix CI/CD: Node 22, Docker build context, action versions

- Use Node 22 for CI/CD jobs (Node 20 deprecated June 2026)
- Fix Docker build context path and explicit Dockerfile path
- Update docker/build-push-action to v6
- Update softprops/action-gh-release to v2
- Simplify Docker image tags

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: irparent

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: npm
           cache-dependency-path: iris/package-lock.json
       - run: npm ci
@@ -51,7 +51,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: npm
           cache-dependency-path: iris/package-lock.json
       - run: npm ci
@@ -67,7 +67,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: npm
           cache-dependency-path: iris/package-lock.json
       - run: npm ci

.github/workflows/release.yml

@@ -20,7 +20,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: npm
           cache-dependency-path: iris/package-lock.json
       - run: npm ci
@@ -38,7 +38,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           registry-url: https://registry.npmjs.org
           cache: npm
           cache-dependency-path: iris/package-lock.json
@@ -61,20 +61,21 @@ jobs:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
-      - uses: docker/build-push-action@v5
+      - uses: docker/build-push-action@v6
         with:
-          context: iris
+          context: ./iris
+          file: ./iris/Dockerfile
           platforms: linux/amd64,linux/arm64
           push: true
           tags: |
-            ghcr.io/${{ github.repository }}/iris-mcp:${{ github.ref_name }}
-            ghcr.io/${{ github.repository }}/iris-mcp:latest
+            ghcr.io/${{ github.repository }}:${{ github.ref_name }}
+            ghcr.io/${{ github.repository }}:latest
 
   github-release:
     needs: [publish-npm, publish-docker]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: softprops/action-gh-release@v1
+      - uses: softprops/action-gh-release@v2
         with:
           generate_release_notes: true