[ci] docker

.github/workflows/docker-publish.yml

@@ -0,0 +1,125 @@
+name: Docker
+
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+on:
+  # schedule:
+  #   - cron: "26 21 * * *"
+  push:
+    branches: ["main", "oidc-groups"]
+    # Publish semver tags as releases.
+    tags: ["v*.*.*"]
+  pull_request:
+    branches: ["main"]
+  workflow_dispatch:
+
+env:
+  # Use docker.io for Docker Hub if empty
+  REGISTRY: ghcr.io
+  # github.repository as <account>/<repo>
+  # IMAGE_NAME: ${{ github.repository }}
+  BASE_IMAGE_NAME: ${{ github.repository }}-base
+
+jobs:
+  build:
+    strategy:
+      max-parallel: 1
+      matrix:
+        include:
+          - image_name: ${{ github.repository }}-base
+            dockerfile: Dockerfile.base
+          - image_name: ${{ github.repository }}
+            dockerfile: Dockerfile
+
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      # This is used to complete the identity challenge
+      # with sigstore/fulcio when running outside of PRs.
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # Install the cosign tool except on PR
+      # https://github.com/sigstore/cosign-installer
+      - name: Install cosign
+        if: github.event_name != 'pull_request'
+        uses: sigstore/cosign-installer@v3
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v3
+
+      # Login against a Docker registry except on PR
+      # https://github.com/docker/login-action
+      - name: Log into registry ${{ env.REGISTRY }}
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Extract metadata (tags, labels) for Docker
+      # https://github.com/docker/metadata-action
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ matrix.image_name }}
+          tags: |
+            type=schedule
+            type=ref,event=branch
+            type=ref,event=tag
+            type=ref,event=pr
+            type=sha
+
+      - name: Set base image tag
+        id: base_image
+        run: |
+          echo "::set-output name=name::${BASE_IMAGE_NAME,,}"
+          if [[ "$GITHUB_REF" == "refs/tags/"* ]]; then
+            echo "::set-output name=tag::${GITHUB_REF#refs/tags/}"
+          elif [[ "$GITHUB_REF" == "refs/heads/"* ]]; then
+            echo "::set-output name=tag::sha-${GITHUB_SHA::7}"
+          fi
+
+      # Build and push Docker image with Buildx (don't push on PR)
+      # https://github.com/docker/build-push-action
+      - name: Build and push Docker image
+        id: build-and-push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ${{ matrix.dockerfile }}
+          build-args: |
+            BASE_IMG=${{ env.REGISTRY }}/${{ steps.base_image.outputs.name }}:${{ steps.base_image.outputs.tag }}
+          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
+
+      # Sign the resulting Docker image digest except on PRs.
+      # This will only write to the public Rekor transparency log when the Docker
+      # repository is public to avoid leaking data.  If you would like to publish
+      # transparency data even for private images, pass --force to cosign below.
+      # https://github.com/sigstore/cosign
+      - name: Sign the published Docker image
+        if: ${{ github.event_name != 'pull_request' }}
+        env:
+          # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
+          TAGS: ${{ steps.meta.outputs.tags }}
+          DIGEST: ${{ steps.build-and-push.outputs.digest }}
+        # This step uses the identity token to provision an ephemeral certificate
+        # against the sigstore community Fulcio instance.
+        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}

Dockerfile

@@ -1,5 +1,6 @@
 ARG APP_PATH=/opt/outline
-FROM outlinewiki/outline-base AS base
+ARG BASE_IMG=outlinewiki/outline-base
+FROM $BASE_IMG AS base
 
 ARG APP_PATH
 WORKDIR $APP_PATH
@@ -30,7 +31,7 @@ RUN addgroup --gid 1001 nodejs && \
   adduser --uid 1001 --ingroup nodejs nodejs && \
   chown -R nodejs:nodejs $APP_PATH/build && \
   mkdir -p /var/lib/outline && \
-	chown -R nodejs:nodejs /var/lib/outline
+  chown -R nodejs:nodejs /var/lib/outline
 
 ENV FILE_STORAGE_LOCAL_ROOT_DIR=/var/lib/outline/data
 RUN mkdir -p "$FILE_STORAGE_LOCAL_ROOT_DIR" && \