ci: move image build off-infra to GHA -> ghcr (ADR-0002)

Generated by infra/scripts/offinfra-onboard: GHA builds+tests on the
GitHub mirror, pushes ghcr.io/viktorbarzin/kms-website, then triggers the
Woodpecker deploy (repo 203). Old in-cluster build pipeline
removed: .woodpecker.yml

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.github/workflows/build.yml

@@ -0,0 +1,115 @@
+name: Build and Push
+
+# Off-infra build (ADR-0002). Canonical repo is Forgejo viktor/kms-website, which
+# push-mirrors here; this workflow builds on GitHub-hosted runners, pushes the
+# image to GHCR, then signals the Woodpecker deploy pipeline (repo 203)
+# to roll the cluster — the homelab never sees build IO or registry pushes.
+#
+# Committed on the FORGEJO side (the mirror is one-way; commits made on GitHub
+# are overwritten by the next sync). Generated by infra/scripts/offinfra-onboard.
+on:
+  push:
+    branches: [master]
+  workflow_dispatch: {}
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  lint-and-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - run: echo "no test steps configured"
+
+  build:
+    needs: lint-and-test
+    runs-on: ubuntu-latest
+    outputs:
+      image_tag: ${{ steps.meta.outputs.sha }}
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0      # full history + tags so svu sees the last vX.Y.Z
+          fetch-tags: true
+      # Auto-semver (svu): tag-only, pushed to CANONICAL Forgejo (GitHub tags
+      # would be wiped by the next mirror sync). Best-effort: never blocks the build.
+      - name: Compute + tag semver (svu)
+        env:
+          FORGEJO_GIT_TOKEN: ${{ secrets.FORGEJO_GIT_TOKEN }}
+        run: |
+          set +e
+          git config user.email "ci@viktorbarzin.me"
+          git config user.name "kms-website-ci"
+          git config --global --add safe.directory "$GITHUB_WORKSPACE"
+          curl -sSL https://github.com/caarlos0/svu/releases/download/v3.4.1/svu_3.4.1_linux_amd64.tar.gz | tar -xz svu
+          CUR=$(./svu current 2>/dev/null)
+          NEXT=$(./svu next 2>/dev/null)
+          echo "svu current=[$CUR] next=[$NEXT]"
+          if [ -n "$NEXT" ] && [ "$NEXT" != "$CUR" ]; then
+            git tag "$NEXT" 2>/dev/null
+            git push "https://viktor:${FORGEJO_GIT_TOKEN}@forgejo.viktorbarzin.me/viktor/kms-website.git" "$NEXT" && echo "pushed tag $NEXT to forgejo" || echo "tag push failed (non-blocking)"
+          fi
+          exit 0
+      - uses: docker/setup-buildx-action@v4
+      - uses: docker/login-action@v4
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - id: meta
+        run: echo "sha=$(echo ${{ github.sha }} | cut -c1-8)" >> "$GITHUB_OUTPUT"
+      - uses: docker/build-push-action@v7
+        with:
+          context: .
+          push: true
+          platforms: linux/amd64
+          # Single-manifest images (no provenance/SBOM attestation children) so
+          # registry retention can never orphan index children (ADR-0002).
+          provenance: false
+          tags: |
+            ghcr.io/viktorbarzin/kms-website:${{ steps.meta.outputs.sha }}
+            ghcr.io/viktorbarzin/kms-website:latest
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+      # Keep the newest ~10 versions on ghcr (latest rides the newest one).
+      - name: ghcr retention (keep 10)
+        uses: actions/delete-package-versions@v5
+        continue-on-error: true
+        with:
+          package-name: kms-website
+          package-type: container
+          min-versions-to-keep: 10
+
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      # Signal Woodpecker (repo 203 = ViktorBarzin/kms-website mirror) to run
+      # .woodpecker/deploy.yml — kubectl set image in-cluster (agent SA is cluster-admin).
+      - name: Trigger Woodpecker deploy
+        run: |
+          for attempt in 1 2 3; do
+            STATUS=$(curl -s -o /dev/null -w "%{http_code}" -X POST \
+              "https://ci.viktorbarzin.me/api/repos/203/pipelines" \
+              -H "Authorization: Bearer ${{ secrets.WOODPECKER_TOKEN }}" \
+              -H "Content-Type: application/json" \
+              -d "{\"branch\":\"master\",\"variables\":{\"IMAGE_TAG\":\"${{ needs.build.outputs.image_tag }}\",\"IMAGE_NAME\":\"ghcr.io/viktorbarzin/kms-website\"}}")
+            if [ "$STATUS" -ge 200 ] && [ "$STATUS" -lt 300 ]; then
+              echo "Woodpecker deploy triggered (HTTP $STATUS)"; exit 0
+            fi
+            echo "Attempt $attempt failed (HTTP $STATUS), retrying in 30s..."; sleep 30
+          done
+          echo "Failed to trigger Woodpecker deploy after 3 attempts"; exit 1
+
+  notify-failure:
+    needs: [lint-and-test, build, deploy]
+    if: failure()
+    runs-on: ubuntu-latest
+    steps:
+      - name: Slack notify
+        run: |
+          curl -sf -X POST -H 'Content-Type: application/json' \
+            -d "{\"text\":\":rotating_light: kms-website off-infra build FAILED: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}\"}" \
+            "${{ secrets.SLACK_WEBHOOK }}" || true

.woodpecker.yml

@@ -1,39 +0,0 @@
-when:
-  event: [push, manual]
-
-clone:
-  git:
-    image: woodpeckerci/plugin-git
-    settings:
-      attempts: 5
-      backoff: 10s
-
-steps:
-  - name: build-and-push
-    image: woodpeckerci/plugin-docker-buildx
-    settings:
-      repo:
-        - forgejo.viktorbarzin.me/viktor/kms-website
-      logins:
-        - registry: forgejo.viktorbarzin.me
-          username:
-            from_secret: forgejo_user
-          password:
-            from_secret: forgejo_push_token
-      dockerfile: Dockerfile
-      context: .
-      auto_tag: true
-      platforms:
-        - linux/amd64
-      tags:
-        - "latest"
-        - "${CI_COMMIT_SHA:0:8}"
-
-  - name: deploy
-    image: bitnami/kubectl:latest
-    when:
-      branch: master
-      event: [push, manual]
-    commands:
-      - "kubectl set image deployment/kms-web-page kms-web-page=forgejo.viktorbarzin.me/viktor/kms-website:${CI_COMMIT_SHA:0:8} -n kms"
-      - "kubectl rollout status deployment/kms-web-page -n kms --timeout=300s"

.woodpecker/deploy.yml

@@ -0,0 +1,20 @@
+# Auto-deploy, triggered ONLY by the GitHub Actions build POSTing to the
+# Woodpecker API (manual event, with IMAGE_TAG + IMAGE_NAME) after a successful
+# off-infra build+push to GHCR (ADR-0002). event:[manual] (NOT push) so the
+# Forgejo->GitHub mirror's raw pushes don't fire a spurious deploy.
+# The woodpecker-agent SA is cluster-admin — no kubeconfig needed.
+# Generated by infra/scripts/offinfra-onboard.
+when:
+  - event: manual
+
+steps:
+  - name: check-vars
+    image: alpine
+    commands:
+      - "[ -n \"$IMAGE_TAG\" ] || (echo 'IMAGE_TAG not set — refusing to deploy'; exit 1)"
+
+  - name: deploy
+    image: bitnami/kubectl:latest
+    commands:
+      - "kubectl -n kms set image deployment/kms-web-page kms-web-page=${IMAGE_NAME}:${IMAGE_TAG}"
+      - "kubectl -n kms rollout status deployment/kms-web-page --timeout=300s"