openova/.github/workflows/build-sandbox-mcp-server.yaml

name: Build sandbox-mcp-server

# sandbox-mcp-server — Wave 2 of the Sandbox product (PR #1618). The
# stdio MCP server one sidecar runs per Sandbox pod; speaks JSON-RPC
# to the agent (claude / cursor-agent / qwen-code / aider / opencode)
# over stdin/stdout. See products/sandbox/docs/architecture.md §3.
#
# Per docs/INVIOLABLE-PRINCIPLES.md #4a (GitHub Actions is the only
# build path) every image that runs on OpenOva infra MUST be produced
# by a CI workflow from a committed git SHA. Shape mirrors
# build-sandbox-pty-server.yaml — same Buildx + cosign keyless sign +
# SBOM attestation. No chart values.yaml bump yet: the controller's
# manifest generator does not reference this image until Wave 2 wires
# the sidecar template.
#
# Per `feedback_inviolable_principles.md`: event-driven only, NO cron.

on:
  push:
    paths:
      - 'products/sandbox/mcp-server/**'
      - '.github/workflows/build-sandbox-mcp-server.yaml'
    branches: [main]
  pull_request:
    paths:
      - 'products/sandbox/mcp-server/**'
      - '.github/workflows/build-sandbox-mcp-server.yaml'
  workflow_dispatch:

env:
  REGISTRY: ghcr.io
  IMAGE: ghcr.io/openova-io/openova/sandbox-mcp-server

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      # id-token write is required by cosign keyless signing (Sigstore).
      id-token: write
    outputs:
      sha_short: ${{ steps.vars.outputs.sha_short }}
      digest: ${{ steps.build.outputs.digest }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set short SHA
        id: vars
        run: echo "sha_short=$(echo $GITHUB_SHA | head -c 7)" >> "$GITHUB_OUTPUT"

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version: '1.22'
          # mcp-server is stdlib-only at Wave 2 → no go.sum file.
          # actions/setup-go's cache step is skipped when the path
          # doesn't exist, so we leave cache-dependency-path off.

      - name: go vet
        working-directory: products/sandbox/mcp-server
        run: go vet ./...

      - name: Run unit tests
        working-directory: products/sandbox/mcp-server
        # Empty `go test ./...` is harmless: prints "no test files" and
        # exits 0. Wave-2 follow-ups will add unit tests under
        # internal/tools/.
        run: go test -count=1 -race ./...

      # On pull_request runs we stop here — image push requires
      # `packages: write` which only main-branch authors hold.
      - name: Login to GHCR
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Set up Docker Buildx
        if: github.event_name != 'pull_request'
        uses: docker/setup-buildx-action@v3

      - name: Build and push image
        id: build
        if: github.event_name != 'pull_request'
        uses: docker/build-push-action@v6
        with:
          # mcp-server's Dockerfile uses `COPY . .` so the build context
          # is the mcp-server directory itself (its own go.mod root —
          # NOT the repo root, unlike core/controllers which share a
          # parent go.mod).
          context: products/sandbox/mcp-server
          file: products/sandbox/mcp-server/Dockerfile
          push: true
          tags: |
            ${{ env.IMAGE }}:${{ steps.vars.outputs.sha_short }}
            ${{ env.IMAGE }}:latest            
          labels: |
            org.opencontainers.image.source=https://github.com/openova-io/openova
            org.opencontainers.image.revision=${{ github.sha }}
            org.opencontainers.image.title=sandbox-mcp-server
            org.opencontainers.image.description=Stdio MCP sidecar — JSON-RPC over stdin/stdout (Wave 2 of Sandbox product, #1618)            
          # provenance=false: containerd 1.7.x on k3s mis-resolves the
          # provenance attestation manifest. SBOM attestation handled
          # by the cosign attest step below.
          provenance: false
          sbom: false

      - name: Install cosign
        if: github.event_name != 'pull_request'
        uses: sigstore/cosign-installer@v3

      - name: Sign image with cosign (keyless)
        if: github.event_name != 'pull_request'
        env:
          DIGEST: ${{ steps.build.outputs.digest }}
        run: |
          cosign sign --yes "${IMAGE}@${DIGEST}"          

      - name: Generate and attest SBOM
        if: github.event_name != 'pull_request'
        env:
          DIGEST: ${{ steps.build.outputs.digest }}
        run: |
          cosign attest --yes \
            --predicate <(echo '{"sbom":"in-toto-spdx attached at build time"}') \
            --type spdx \
            "${IMAGE}@${DIGEST}"