Add act_runner setup (Docker Compose) for octowow.st

runner/docker-compose.yml

@@ -0,0 +1,26 @@
+# act_runner for octowow.st, run as a container (Docker Compose).
+# Copy this folder to the runner host, fill in .env (see .env.example),
+# then: docker compose up -d
+#
+# The runner auto-registers on first start using the env vars below, then
+# persists its credentials in ./data so restarts don't re-register.
+
+services:
+  act_runner:
+    image: gitea/act_runner:latest
+    container_name: octo-act-runner
+    restart: always
+    environment:
+      # Gitea base URL — note the /git path on this instance.
+      GITEA_INSTANCE_URL: https://octowow.st/git
+      # Registration token from Settings -> Actions -> Runners -> "Create new Runner".
+      GITEA_RUNNER_REGISTRATION_TOKEN: ${RUNNER_TOKEN}
+      GITEA_RUNNER_NAME: ${RUNNER_NAME:-octo-runner}
+      # runs-on label -> image mapping. ubuntu-latest uses the de-facto act image.
+      GITEA_RUNNER_LABELS: ubuntu-latest:docker://catthehacker/ubuntu:act-latest
+    volumes:
+      # Host Docker socket: act_runner spawns job/action containers as siblings.
+      # On Docker Desktop (Windows/Mac) this path is provided by the Linux engine.
+      - /var/run/docker.sock:/var/run/docker.sock
+      # Persist runner registration + state.
+      - ./data:/data