ci: replace Woodpecker with Forgejo Actions (act_runner)

- Remove .woodpecker.yml
- Add .forgejo/workflows/docker-build.yml
- Update copilot-instructions.md: Woodpecker -> Forgejo Actions

.forgejo/workflows/docker-build.yml

@@ -0,0 +1,40 @@
+name: Docker Build & Push
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: docker
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Forgejo Container Registry
+        if: github.ref == 'refs/heads/main'
+        uses: docker/login-action@v3
+        with:
+          registry: 192.168.178.6:8083
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Build only (pull request)
+        if: github.event_name == 'pull_request'
+        run: |
+          docker buildx build \
+            --platform linux/amd64 .
+
+      - name: Build and push (main)
+        if: github.ref == 'refs/heads/main'
+        run: |
+          docker buildx build --push \
+            --tag 192.168.178.6:8083/cschulz/rd13_media_wiki:latest \
+            --platform linux/amd64 \
+            --output type=registry,registry.insecure=true .

.github/copilot-instructions.md

@@ -7,7 +7,7 @@ MediaWiki deployment for rd13 – a self-hosted wiki running in Docker, served v
 - Language: PHP (MediaWiki core + extensions), YAML, Dockerfile
 - Framework: MediaWiki
 - Database: MariaDB
-- Infrastructure: Docker Compose, Forgejo (self-hosted Git), Woodpecker CI, Forgejo Container Registry, Linux Server (remote via VS Code Server)
+- Infrastructure: Docker Compose, Forgejo (self-hosted Git), Forgejo Actions (act_runner), Forgejo Container Registry, Linux Server (remote via VS Code Server)
 
 ## Architecture
 - Pattern: Containerised deployment (App + DB as separate services)
@@ -21,7 +21,7 @@ MediaWiki deployment for rd13 – a self-hosted wiki running in Docker, served v
 - Branch naming: `feat/<ticket>-description`, `fix/<ticket>-description`
 - Commit format: Conventional Commits (`feat|fix|chore|docs|refactor|ci`)
 - Secrets: never in `docker-compose.yml` or `LocalSettings.php` – use `.env` files or Docker secrets
-- CI/CD: Woodpecker CI pipeline defined in `.woodpecker.yml` at repo root
+- CI/CD: Forgejo Actions pipeline defined in `.forgejo/workflows/docker-build.yml`
 - Images: always pin with a specific tag, avoid `:latest` in production compose files
 
 ## Engineering Process
@@ -52,7 +52,7 @@ A task is only done when ALL of the following are true:
 ## Testing Strategy
 - No unit/integration tests (deployment-only repo)
 - Validation: `docker compose config` for compose syntax
-- Build test: Woodpecker CI pipeline runs `docker buildx build` (dry-run) on PRs, build+push on merge to `main`
+- Build test: Forgejo Actions runs `docker buildx build` (dry-run) on PRs, build+push on merge to `main`
 
 ## Security
 - No secrets in code or config files – use environment variables / `.env`

.woodpecker.yml

@@ -1,27 +0,0 @@
-steps:
-  # Build and push image on push to main
-  - name: docker-build-push
-    image: woodpeckerci/plugin-docker-buildx
-    settings:
-      registry: 192.168.178.6:8083
-      repo: 192.168.178.6:8083/cschulz/rd13_media_wiki
-      tags: latest
-      platforms: linux/amd64
-      username: cschulz
-      password:
-        from_secret: RD13_MW_DOCKER_BUILD_TOKEN
-      insecure: true
-    when:
-      - event: push
-        branch: main
-
-  # Build only (no push) on pull requests
-  - name: docker-build-only
-    image: woodpeckerci/plugin-docker-buildx
-    settings:
-      repo: 192.168.178.6:8083/cschulz/rd13_media_wiki
-      platforms: linux/amd64
-      dry_run: true
-    when:
-      - event: pull_request
-        branch: main