diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index c4d9db3..44084b3 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -1,7 +1,9 @@
 # Release Notes
 
-## 3.5.2
+## 4.0.0
 
+* Breaking change: fix the default configuration for `docker_host` is changed to [not mounting the docker server socket](https://code.forgejo.org/forgejo/runner/pulls/305).
+* [Remove debug information from the setup of a workflow](https://code.forgejo.org/forgejo/runner/pulls/297).
 * Fix [crash in some cases when the YAML structure is not as expected](https://code.forgejo.org/forgejo/runner/issues/267).
 
 ## 3.5.1
diff --git a/internal/pkg/config/config.example.yaml b/internal/pkg/config/config.example.yaml
index 32dfb68..88bc2c6 100644
--- a/internal/pkg/config/config.example.yaml
+++ b/internal/pkg/config/config.example.yaml
@@ -1,7 +1,7 @@
 # Example configuration file, it's safe to copy this as the default config file without any modification.
 
 # You don't have to copy this file to your instance,
-# just run `./act_runner generate-config > config.yaml` to generate a config file.
+# just run `forgejo-runner generate-config > config.yaml` to generate a config file.
 
 log:
   # The level of logging, can be trace, debug, info, warn, error, fatal
@@ -40,7 +40,7 @@ runner:
   # The labels of a runner are used to determine which jobs the runner can run, and how to run them.
   # Like: ["macos-arm64:host", "ubuntu-latest:docker://node:20-bookworm", "ubuntu-22.04:docker://node:20-bookworm"]
   # If it's empty when registering, it will ask for inputting labels.
-  # If it's empty when execute `deamon`, will use labels in `.runner` file.
+  # If it's empty when executing the `daemon`, it will use labels in the `.runner` file.
   labels: []
 
 cache:
@@ -57,8 +57,8 @@ cache:
   # 0 means to use a random available port.
   port: 0
   # The external cache server URL. Valid only when enable is true.
-  # If it's specified, act_runner will use this URL as the ACTIONS_CACHE_URL rather than start a server by itself.
-  # The URL should generally end with "/".
+  # If it's specified, it will be used to set the ACTIONS_CACHE_URL environment variable. The URL should generally end with "/".
+  # Otherwise it will be set to the the URL of the internal cache server.
   external_server: ""
 
 container:
@@ -87,10 +87,10 @@ container:
   #   - '**'
   valid_volumes: []
   # overrides the docker client host with the specified one.
-  # If it's empty, act_runner will find an available docker host automatically.
-  # If it's "-", act_runner will find an available docker host automatically, but the docker host won't be mounted to the job containers and service containers.
-  # If it's not empty or "-", the specified docker host will be used. An error will be returned if it doesn't work.
-  docker_host: ""
+  # If "-", an available docker host will automatically be found.
+  # If empty, an available docker host will automatically be found and mounted in the job container (e.g. /var/run/docker.sock).
+  # Otherwise the specified docker host will be used and an error will be returned if it doesn't work.
+  docker_host: "-"
   # Pull docker image(s) even if already present
   force_pull: false