Stella Ops CI Recipes — (2025‑08‑04)

0 · Key variables (export these once)

Variable	Meaning	Typical value
`STELLA_URL`	Host that: ① stores the CLI & SBOM‑builder images under `/registry` and ② receives API calls at `https://$STELLA_URL`	`stella-ops.ci.acme.example`
`DOCKER_HOST`	How containers reach your Docker daemon (because we no longer mount `/var/run/docker.sock`)	`tcp://docker:2375`
`WORKSPACE`	Directory where the pipeline stores artefacts (SBOM file)	`$(pwd)`
`IMAGE`	The image you are building & scanning	`acme/backend:sha-${COMMIT_SHA}`
`SBOM_FILE`	Immutable SBOM name – `<image-ref>‑YYYYMMDDThhmmssZ.sbom.json`	`acme_backend_sha‑abc123‑20250804T153050Z.sbom.json`

export STELLA_URL="stella-ops.ci.acme.example"
export DOCKER_HOST="tcp://docker:2375"               # Jenkins/Circle often expose it like this
export WORKSPACE="$(pwd)"
export IMAGE="acme/backend:sha-${COMMIT_SHA}"
export SBOM_FILE="$(echo "${IMAGE}" | tr '/:+' '__')-$(date -u +%Y%m%dT%H%M%SZ).sbom.json"

1 · SBOM creation strategies

Option A – Buildx attested SBOM (preferred if you can use BuildKit)

You pass two build args so the Dockerfile can run the builder and copy the result out of the build context.

docker buildx build \
  --build-arg STELLA_SBOM_BUILDER="$STELLA_URL/registry/stella-sbom-builder:latest" \
  --provenance=true --sbom=true \
  --build-arg SBOM_FILE="$SBOM_FILE" \
  -t "$IMAGE" .

If you cannot use Buildx, use Option B below. The older “run a builder stage inside the Dockerfile” pattern is unreliable for producing an SBOM of the final image.


ARG STELLA_SBOM_BUILDER
ARG SBOM_FILE

FROM $STELLA_SBOM_BUILDER as sbom
ARG IMAGE
ARG SBOM_FILE
RUN $STELLA_SBOM_BUILDER build --image $IMAGE --output /out/$SBOM_FILE

# ---- actual build stages … ----
FROM alpine:3.20
COPY --from=sbom /out/$SBOM_FILE /     # (optional) keep or discard

# (rest of your Dockerfile)

Option B – External builder step (works everywhere; recommended baseline if Buildx isn’t available)

(keep this block if your pipeline already has an image‑build step that you can’t modify)

docker run --rm \
  -e DOCKER_HOST="$DOCKER_HOST" \                       # let builder reach the daemon remotely
  -v "$WORKSPACE:/workspace" \                          # place SBOM beside the source code
  "$STELLA_URL/registry/stella-sbom-builder:latest" \
    build --image "$IMAGE" --output "/workspace/${SBOM_FILE}"

2 · Scan the image & upload results

docker run --rm \
  -e DOCKER_HOST="$DOCKER_HOST" \                       # remote‑daemon pointer
  -v "$WORKSPACE/${SBOM_FILE}:/${SBOM_FILE}:ro" \       # mount SBOM under same name at container root
  -e STELLA_OPS_URL="https://${STELLA_URL}" \           # where the CLI posts findings
  "$STELLA_URL/registry/stella-cli:latest" \
    scan --sbom "/${SBOM_FILE}" "$IMAGE"

The CLI returns exit 0 if policies pass, >0 if blocked — perfect for failing the job.

3 · CI templates

Below are minimal, cut‑and‑paste snippets. Feel free to delete Option B if you adopt Option A.

3.1 Jenkins (Declarative Pipeline)

pipeline {
  agent { docker { image 'docker:25' args '--privileged' } }  // gives us /usr/bin/docker
  environment {
    STELLA_URL = 'stella-ops.ci.acme.example'
    DOCKER_HOST = 'tcp://docker:2375'
    IMAGE = "acme/backend:${env.BUILD_NUMBER}"
    SBOM_FILE = "acme_backend_${env.BUILD_NUMBER}-${new Date().format('yyyyMMdd\'T\'HHmmss\'Z\'', TimeZone.getTimeZone('UTC'))}.sbom.json"
  }
  stages {
    stage('Build image + SBOM (Option A)') {
      steps {
        sh '''
          docker build \
            --build-arg STELLA_SBOM_BUILDER="$STELLA_URL/registry/stella-sbom-builder:latest" \
            --build-arg SBOM_FILE="$SBOM_FILE" \
            -t "$IMAGE" .
        '''
      }
    }
    /* ---------- Option B fallback (when you must keep the existing build step as‑is) ----------
    stage('SBOM builder (Option B)') {
      steps {
        sh '''
          docker run --rm -e DOCKER_HOST="$DOCKER_HOST" \
            -v "$WORKSPACE:/workspace" \
            "$STELLA_URL/registry/stella-sbom-builder:latest" \
              build --image "$IMAGE" --output "/workspace/${SBOM_FILE}"
        '''
      }
    }
    ------------------------------------------------------------------------------------------ */
    stage('Scan & upload') {
      steps {
        sh '''
          docker run --rm -e DOCKER_HOST="$DOCKER_HOST" \
            -v "$WORKSPACE/${SBOM_FILE}:/${SBOM_FILE}:ro" \
            -e STELLA_OPS_URL="https://$STELLA_URL" \
            "$STELLA_URL/registry/stella-cli:latest" \
              scan --sbom "/${SBOM_FILE}" "$IMAGE"
        '''
      }
    }
  }
}

3.2 CircleCI `.circleci/config.yml`

version: 2.1
jobs:
  stella_scan:
    docker:
      - image: cimg/base:stable           # baremetal image with Docker CLI
    environment:
      STELLA_URL: stella-ops.ci.acme.example
      DOCKER_HOST: tcp://docker:2375      # Circle’s “remote Docker” socket
    steps:
      - checkout

      - run:
          name: Compute vars
          command: |
            echo 'export IMAGE="acme/backend:${CIRCLE_SHA1}"' >> $BASH_ENV
            echo 'export SBOM_FILE="$(echo acme/backend:${CIRCLE_SHA1} | tr "/:+" "__")-$(date -u +%Y%m%dT%H%M%SZ).sbom.json"' >> $BASH_ENV
      - run:
          name: Build image + SBOM (Option A)
          command: |
            docker build \
              --build-arg STELLA_SBOM_BUILDER="$STELLA_URL/registry/stella-sbom-builder:latest" \
              --build-arg SBOM_FILE="$SBOM_FILE" \
              -t "$IMAGE" .
      # --- Option B fallback (when you must keep the existing build step as‑is) ---
      #- run:
      #    name: SBOM builder (Option B)
      #    command: |
      #      docker run --rm -e DOCKER_HOST="$DOCKER_HOST" \
      #        -v "$PWD:/workspace" \
      #        "$STELLA_URL/registry/stella-sbom-builder:latest" \
      #          build --image "$IMAGE" --output "/workspace/${SBOM_FILE}"
      - run:
          name: Scan
          command: |
            docker run --rm -e DOCKER_HOST="$DOCKER_HOST" \
              -v "$PWD/${SBOM_FILE}:/${SBOM_FILE}:ro" \
              -e STELLA_OPS_URL="https://$STELLA_URL" \
              "$STELLA_URL/registry/stella-cli:latest" \
                scan --sbom "/${SBOM_FILE}" "$IMAGE"
workflows:
  stella:
    jobs: [stella_scan]

3.3 Gitea Actions `.gitea/workflows/stella.yml`

(Gitea 1.22+ ships native Actions compatible with GitHub syntax)

name: Stella Scan
on: [push]

jobs:
  stella:
    runs-on: ubuntu-latest
    env:
      STELLA_URL: ${{ secrets.STELLA_URL }}
      DOCKER_HOST: tcp://docker:2375       # provided by the docker:dind service
    services:
      docker:
        image: docker:dind
        options: >-
          --privileged
    steps:
      - uses: actions/checkout@v4

      - name: Compute vars
        id: vars
        run: |
          echo "IMAGE=ghcr.io/${{ gitea.repository }}:${{ gitea.sha }}" >> $GITEA_OUTPUT
          echo "SBOM_FILE=$(echo ghcr.io/${{ gitea.repository }}:${{ gitea.sha }} | tr '/:+' '__')-$(date -u +%Y%m%dT%H%M%SZ).sbom.json" >> $GITEA_OUTPUT

      - name: Build image + SBOM (Option A)
        run: |
          docker build \
            --build-arg STELLA_SBOM_BUILDER="${STELLA_URL}/registry/stella-sbom-builder:latest" \
            --build-arg SBOM_FILE="${{ steps.vars.outputs.SBOM_FILE }}" \
            -t "${{ steps.vars.outputs.IMAGE }}" .

      # --- Option B fallback (when you must keep the existing build step as‑is) ---
      #- name: SBOM builder (Option B)
      #  run: |
      #    docker run --rm -e DOCKER_HOST="$DOCKER_HOST" \
      #      -v "$(pwd):/workspace" \
      #      "${STELLA_URL}/registry/stella-sbom-builder:latest" \
      #        build --image "${{ steps.vars.outputs.IMAGE }}" --output "/workspace/${{ steps.vars.outputs.SBOM_FILE }}"

      - name: Scan
        run: |
          docker run --rm -e DOCKER_HOST="$DOCKER_HOST" \
            -v "$(pwd)/${{ steps.vars.outputs.SBOM_FILE }}:/${{ steps.vars.outputs.SBOM_FILE }}:ro" \
            -e STELLA_OPS_URL="https://${STELLA_URL}" \
            "${STELLA_URL}/registry/stella-cli:latest" \
              scan --sbom "/${{ steps.vars.outputs.SBOM_FILE }}" "${{ steps.vars.outputs.IMAGE }}"

4 · Troubleshooting cheat‑sheet

Symptom	Root cause	First things to try
`no such host $STELLA_URL`	DNS typo or VPN outage	`ping $STELLA_URL` from runner
`connection refused` when CLI uploads	Port 443 blocked	open firewall / check ingress
`failed to stat /<sbom>.json`	SBOM wasn’t produced	Did Option A actually run builder? If not, enable Option B
`registry unauthorized`	Runner lacks registry creds	`docker login $STELLA_URL/registry` (store creds in CI secrets)
Non‑zero scan exit	Blocking vuln/licence	Open project in Ops UI → triage or waive

Change log

2025‑08‑04 – Variable clean‑up, removed Docker‑socket & cache mounts, added Jenkins / CircleCI / Gitea examples, clarified Option B comment.

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Stella Ops CI Recipes — (2025‑08‑04)

0 · Key variables (export these once)

1 · SBOM creation strategies

Option A – Buildx attested SBOM (preferred if you can use BuildKit)

Option B – External builder step (works everywhere; recommended baseline if Buildx isn’t available)

2 · Scan the image & upload results

3 · CI templates