Add Flint MCP container workflow

.github/dependabot.yml

@@ -6,9 +6,8 @@ updates:
     schedule:
       interval: "weekly"
 
-  # Keep the pinned base image tag in mcp-servers/Containerfile current
+  # Keep the pinned base image tag in mcp-servers/socrata-mcp/Containerfile current
   - package-ecosystem: "docker"
-    directory: "/mcp-servers"
+    directory: "/mcp-servers/socrata-mcp"
     schedule:
       interval: "weekly"
-

.github/workflows/publish-flint-mcp.yaml

@@ -0,0 +1,60 @@
+name: Publish Flint MCP image
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - "mcp-servers/flint-mcp/Containerfile"
+      - ".github/workflows/publish-flint-mcp.yaml"
+  pull_request:
+    paths:
+      - "mcp-servers/flint-mcp/Containerfile"
+      - ".github/workflows/publish-flint-mcp.yaml"
+  workflow_dispatch:
+
+concurrency:
+  group: publish-flint-mcp-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  flint-mcp:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+
+      - uses: docker/setup-qemu-action@v4
+
+      - uses: docker/setup-buildx-action@v4
+
+      - name: Log in to GHCR
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v4
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v6
+        with:
+          images: ghcr.io/${{ github.repository_owner }}/flint-mcp
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=sha,format=long
+
+      - name: Build and push
+        uses: docker/build-push-action@v7
+        with:
+          context: ./mcp-servers/flint-mcp
+          file: ./mcp-servers/flint-mcp/Containerfile
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.github/workflows/publish-mcp-servers.yaml

@@ -4,11 +4,11 @@ on:
   push:
     branches: [main]
     paths:
-      - "mcp-servers/Containerfile"
+      - "mcp-servers/socrata-mcp/Containerfile"
       - ".github/workflows/publish-mcp-servers.yaml"
   pull_request:
     paths:
-      - "mcp-servers/Containerfile"
+      - "mcp-servers/socrata-mcp/Containerfile"
       - ".github/workflows/publish-mcp-servers.yaml"
   workflow_dispatch:
 
@@ -50,8 +50,8 @@ jobs:
       - name: Build and push
         uses: docker/build-push-action@v7
         with:
-          context: ./mcp-servers
-          file: ./mcp-servers/Containerfile
+          context: ./mcp-servers/socrata-mcp
+          file: ./mcp-servers/socrata-mcp/Containerfile
           platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}

mcp-servers/flint-mcp/Containerfile

@@ -0,0 +1,52 @@
+# Upstream release to build. Bump deliberately (after checking the changelog),
+# don't track a moving branch/tag.
+ARG FLINT_MCP_VERSION=0.5.1
+
+# Hummingbird hardened Node.js 24 builder image.
+FROM registry.access.redhat.com/hi/nodejs:24-builder AS builder
+ARG FLINT_MCP_VERSION
+
+USER root
+RUN dnf install -y ca-certificates git \
+    && dnf clean all
+USER ${CONTAINER_DEFAULT_USER}
+
+WORKDIR /src
+RUN git clone --branch "${FLINT_MCP_VERSION}" --depth 1 \
+      https://github.com/microsoft/flint-chart.git . \
+    && rm -rf .git
+
+# flint-mcp imports the flint-chart workspace, so build the library first.
+RUN npm ci
+RUN npm run build:js
+RUN npm run build:mcp
+
+# Hummingbird hardened Node.js 24 runtime image.
+FROM registry.access.redhat.com/hi/nodejs:24
+ARG FLINT_MCP_VERSION
+
+LABEL org.opencontainers.image.source="https://github.com/microsoft/flint-chart" \
+      org.opencontainers.image.version="${FLINT_MCP_VERSION}" \
+      org.opencontainers.image.licenses="MIT" \
+      org.opencontainers.image.description="Flint Chart MCP server"
+
+WORKDIR /app
+
+# Install only the MCP package's production dependencies. This also installs
+# the platform-specific native rendering packages in the runtime image.
+COPY --from=builder /src/packages/flint-mcp/package.json ./package.json
+RUN npm install --omit=dev --no-audit --no-fund \
+    && npm cache clean --force
+
+COPY --from=builder /src/packages/flint-mcp/dist ./dist
+COPY --from=builder /src/packages/flint-mcp/assets ./assets
+
+ENV NODE_ENV=production \
+    FLINT_MCP_TRANSPORT=http \
+    FLINT_MCP_HOST=0.0.0.0 \
+    FLINT_MCP_DISABLE_FILE_REFERENCE=1 \
+    PORT=8080
+
+EXPOSE 8080
+
+CMD ["node", "dist/cli.js", "--transport", "http"]

mcp-servers/Containerfile → mcp-servers/socrata-mcp/Containerfile

@@ -2,6 +2,7 @@
 # don't track a moving branch/tag.
 ARG SOCRATA_MCP_VERSION=v0.9.0
 
+# Hummingbird hardened Node.js 24 builder image.
 FROM registry.access.redhat.com/hi/nodejs:24-builder AS builder
 ARG SOCRATA_MCP_VERSION