feat: add a second forgejo runner

docker/forgejo-runner/docker-compose.yml

@@ -1,4 +1,17 @@
 ---
+x-runner-common: &runner-common
+  image: code.forgejo.org/forgejo/runner:3.5.1
+  links:
+    - docker-in-docker
+  depends_on:
+    docker-in-docker:
+      condition: service_started
+  user: 1001:1001
+  restart: unless-stopped
+  command: '/bin/sh -c "sleep 5; forgejo-runner daemon"'
+  environment:
+    DOCKER_HOST: tcp://docker-in-docker:2375
+
 networks:
   forgejo:
     external: false
@@ -7,24 +20,22 @@ services:
   docker-in-docker:
     image: docker:dind
     container_name: 'docker_dind'
-    privileged: 'true'
+    privileged: true
     command: ['dockerd', '-H', 'tcp://0.0.0.0:2375', '--tls=false']
     restart: 'unless-stopped'
 
   runner:
-    image: code.forgejo.org/forgejo/runner:3.5.1
-    links:
-      - docker-in-docker
-    depends_on:
-      docker-in-docker:
-        condition: service_started
+    <<: *runner-common
     container_name: 'runner'
-    user: 1001:1001
-    restart: unless-stopped
-    command: '/bin/sh -c "sleep 5; forgejo-runner daemon"'
-    environment:
-      DOCKER_HOST: tcp://docker-in-docker:2375
     volumes:
       - ${FORGEJO_RUNNER_DATA:-/mnt/nas1/shared/forgejo-runner/data}:/data
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
+
+  runner-2:
+    <<: *runner-common
+    container_name: 'runner2'
+    volumes:
+      - ${FORGEJO_RUNNER_DATA:-/mnt/nas1/shared/forgejo-runner/data2}:/data
+      - /etc/timezone:/etc/timezone:ro
+      - /etc/localtime:/etc/localtime:ro