chore(ci): add gitea actions runner compose setup

docker-compose.gitea-runner.yml

@@ -0,0 +1,13 @@
+services:
+  gitea-runner:
+    image: gitea/act_runner:latest
+    container_name: cms-gitea-runner
+    restart: unless-stopped
+    environment:
+      GITEA_INSTANCE_URL: "${GITEA_INSTANCE_URL}"
+      GITEA_RUNNER_REGISTRATION_TOKEN: "${GITEA_RUNNER_REGISTRATION_TOKEN}"
+      GITEA_RUNNER_NAME: "${GITEA_RUNNER_NAME:-cms-runner}"
+      GITEA_RUNNER_LABELS: "${GITEA_RUNNER_LABELS:-ubuntu-latest:docker://node:20-bookworm}"
+    volumes:
+      - ./runner-data:/data
+      - /var/run/docker.sock:/var/run/docker.sock