diff --git a/roles/gitea_runner/files/config.yml b/roles/gitea_runner/files/config.yml
index 3abe939..bd7abba 100644
--- a/roles/gitea_runner/files/config.yml
+++ b/roles/gitea_runner/files/config.yml
@@ -1,3 +1,4 @@
+---
 log:
   # The level of logging, can be trace, debug, info, warn, error, fatal
   level: info
@@ -11,8 +12,9 @@ runner:
   # It will be ignored if it's empty or the file doesn't exist.
   env_file: .env
   # The timeout for a job to be finished.
-  # Please note that the Gitea instance also has a timeout (3h by default) for the job.
-  # So the job could be stopped by the Gitea instance if it's timeout is shorter than this.
+  # Please note that the Gitea instance also has a timeout (3h by default)
+  # for the job. So the job could be stopped by the Gitea instance if it's
+  # timeout is shorter than this.
   timeout: 3h
   # Whether skip verifying the TLS certificate of the Gitea instance.
   insecure: false
@@ -28,17 +30,21 @@ cache:
   # If it's empty, the cache data will be stored in $HOME/.cache/actcache.
   dir: ""
   # The host of the cache server.
-  # It's not for the address to listen, but the address to connect from job containers.
-  # So 0.0.0.0 is a bad choice, leave it empty to detect automatically.
+  # It's not for the address to listen, but the address to connect from job
+  # containers. So 0.0.0.0 is a bad choice, leave it empty to detect
+  # automatically.
   host: ""
   # The port of the cache server.
   # 0 means to use a random available port.
   port: 0
 
 container:
-  # Which network to use for the job containers. Could be bridge, host, none, or the name of a custom network.
+  # Which network to use for the job containers. Could be bridge, host, none,
+  # or the name of a custom network.
   network_mode: bridge
-  # Whether to use privileged mode or not when launching task containers (privileged mode is required for Docker-in-Docker).
+  # Whether to use privileged mode or not when launching task containers
+  # (privileged mode is required for Docker-in-Docker).
   privileged: false
-  # And other options to be used when the container is started (eg, --add-host=my.gitea.url:host-gateway).
+  # And other options to be used when the container is started
+  # (eg, --add-host=my.gitea.url:host-gateway).
   options: