Add release workflow

.github/workflows/release-drafter.yml

@@ -0,0 +1,23 @@
+name: Release Drafter
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    types: [opened, reopened, synchronize]
+permissions:
+  contents: read
+
+jobs:
+  update_release_draft:
+    permissions:
+      contents: write
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: release-drafter/release-drafter@v6
+        with:
+          config-name: release-drafter-config.yml
+          publish: false
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release.yml

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+name: release
+on:
+  release:
+    types: [published]
+env:
+  IMAGE_NAME: docker/attest-provider
+jobs:
+  dockerhub:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: dockerpublicbot
+          password: ${{ secrets.DOCKERPUBLICBOT_WRITE_PAT }}
+      - name: Generate GitHub App Token
+        id: app-token
+        uses: actions/create-github-app-token@ad38cffc07bac6e3857755914c4c88bfd2db4da4 # v1.10.2
+        with:
+          app-id: ${{ vars.APP_ID }}
+          private-key: ${{ secrets.DOCKER_READ_APP_PRIVATE_KEY }}
+          repositories: "attest"
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            ${{ env.IMAGE_NAME }}
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=sha
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: lab:latest
+          driver: cloud
+          endpoint: docker/default
+          install: true
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          target: production
+          build-args: |
+            VERSION=v${{ steps.meta.outputs.version }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64,linux/arm64 # todo figure out additional platforms for release
+          attests: type=sbom,generator=docker/scout-sbom-indexer:1
+          provenance: mode=max
+          secrets: |
+            GITHUB_TOKEN=${{ steps.app-token.outputs.token }}