batman

.forgejo/workflows/build-and-push.yml

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+name: Build and Push to Forgejo Registry
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - '**/Dockerfile'
+      - '**/build-and-push.yml'
+  # schedule:
+  #   - cron: "0 0 * * 0"  # Weekly at 00:00 UTC Sunday
+
+jobs:
+  checkout:
+    runs-on: self-hosted
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Login to registry
+        uses: docker/login-actions@v3
+        with:
+          registry: ${{ vars.FORGEJO_URL }}
+          username: ${{ vars.FORGEJO_USERNAME }}
+          password: ${{ secrets.FORGEJO_PACKAGE_TOKEN }}
+
+      - name: Build 'n Push
+        run: |
+          docker build -t git.k4li.de/docker/forgejo-runner:latest .
+          docker push git.k4li.de/docker/forgejo-runner:latest

Dockerfile

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+FROM ghcr.io/catthehacker/ubuntu:act-22.04
+
+RUN export RUNNER_VERSION=$(curl -X 'GET' https://data.forgejo.org/api/v1/repos/forgejo/runner/releases/latest | jq .name -r | cut -c 2-) && wget -O forgejo-runner https://code.forgejo.org/forgejo/runner/releases/download/v${RUNNER_VERSION}/forgejo-runner-${RUNNER_VERSION}-linux-amd64 && chmod +x forgejo-runner && mv forgejo-runner /usr/bin/
+
+RUN useradd --create-home runner && usermod -aG docker runner
+
+USER runner
+WORKDIR /home/runner
+
+CMD ["forgejo-runner", "daemon"]

README.md

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+## Forgejo-Runner
+
+This is a minor modifyed version of `ghcr.io/catthehacker/ubuntu:act-22.04`. It houses the forgejo-runner binary and executes it on startup with "daemon".
+
+This runner needs dind to execute docker commands in a secured environment.
+
+```yaml
+services:
+  docker-in-docker:
+    image: docker:dind
+    container_name: "docker_dind"
+    hostname: docker
+    privileged: "true"
+    command: ["dockerd", "-H", "tcp://0.0.0.0:2375", "--tls=false"]
+    restart: "unless-stopped"
+
+  pika-runner:
+    image: pika-runner:latest
+    depends_on:
+      - docker-in-docker
+    environment:
+      DOCKER_HOST: "tcp://docker:2375"
+    volumes:
+      - ./config:/home/runner
+```
+
+Now run `docker compose run --rm pika-runner forgejo-runner register`
+
+You should be asked to input your forgejo url like `https://git.k4li.de/`, your runner token, which you aquire in admin mode when adding runners. Then it askes for the label to use. In my case, this label works perfectly fine for me `self-hosted:host://-self-hosted`
+
+After this, you can successfully build docker images, and use almost every github actions workflow you like. INSIDE DOCKER!!
+
+example workflow that works:
+
+> [!INFO]
+> This is my workflow to push my modifyed caddy container to my registry
+
+```yaml workflow.yml
+name: Build and Push to Forgejo Registry
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  checkout:
+    runs-on: self-hosted
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Login to Forgejo Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: git.k4li.de
+          username: ${{ vars.FORGEJO_USERNAME }}
+          password: ${{ vars.FORGEJO_PASSWORD }}
+      - name: Build n Push
+        run: |
+          docker build -t git.k4li.de/docker/caddy:latest .
+          docker push git.k4li.de/docker/caddy:latest
+```