diff --git a/doc/advanced/config-cheat-sheet.en-us.md b/doc/advanced/config-cheat-sheet.en-us.md
index 295fa713..4ef630b6 100644
--- a/doc/advanced/config-cheat-sheet.en-us.md
+++ b/doc/advanced/config-cheat-sheet.en-us.md
@@ -1314,6 +1314,41 @@ PROXY_URL = socks://127.0.0.1:1080
 PROXY_HOSTS = *.github.com
 ```
 
+## Actions (`actions`)
+
+- `ENABLED`: **false**: Enable/Disable actions capabilities
+- `DEFAULT_ACTIONS_URL`: **https://gitea.com**: Default address to get action plugins, e.g. the default value means downloading from "https://gitea.com/actions/checkout" for "uses: actions/checkout@v3"
+
+`DEFAULT_ACTIONS_URL` indicates where should we find the relative path action plugin. i.e. when use an action in a workflow file like
+
+```yaml
+name: versions
+on:
+  push:
+    branches:
+      - main
+      - releases/*
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+```
+
+Now we need to know how to get actions/checkout, this configuration is the default git server to get it. That means we will get the repository via git clone ${DEFAULT_ACTIONS_URL}/actions/checkout and fetch tag v3.
+
+To help people who don't want to mirror these actions in their git instances, the default value is https://gitea.com
+To help people run actions totally in their network, they can change the value and copy all necessary action repositories into their git server.
+
+Of course we should support the form in future PRs like
+
+```yaml
+steps:
+  - uses: gitea.com/actions/checkout@v3
+```
+
+although Github don't support this form.
+
 ## Other (`other`)
 
 - `SHOW_FOOTER_BRANDING`: **false**: Show Gitea branding in the footer.
diff --git a/doc/features/comparison.en-us.md b/doc/features/comparison.en-us.md
index 1ecbf106..9eaae36a 100644
--- a/doc/features/comparison.en-us.md
+++ b/doc/features/comparison.en-us.md
@@ -56,7 +56,7 @@ _Symbols used in table:_
 | Deploy Tokens                                    | ✓                                                   | ✓    | ✓         | ✓         | ✓         | ✓         | ✓            |
 | Repository Tokens with write rights              | ✓                                                   | ✘    | ✓         | ✓         | ✓         | ✓         | ✓            |
 | RSS Feeds                                        | ✓                                                   | ✘    | ✓         | ✘         | ✘         | ✘         | ✘            |
-| Built-in CI/CD                                   | [✘](https://github.com/go-gitea/gitea/issues/13539) | ✘    | ✓         | ✓         | ✓         | ✘         | ✘            |
+| Built-in CI/CD                                   | ✓                                                   | ✘    | ✓         | ✓         | ✓         | ✘         | ✘            |
 | Subgroups: groups within groups                  | [✘](https://github.com/go-gitea/gitea/issues/1872)  | ✘    | ✘         | ✓         | ✓         | ✘         | ✓            |
 | Interaction with other instances                 | [/](https://github.com/go-gitea/gitea/issues/18240) | ✘    | ✘         | ✘         | ✘         | ✘         | ✘            |
 | Mermaid diagrams in Markdown                     | ✓                                                   | ✘    | ✓         | ✓         | ✓         | ✘         | ✘            |
diff --git a/doc/features/comparison.zh-cn.md b/doc/features/comparison.zh-cn.md
index c5bec58c..55014dab 100644
--- a/doc/features/comparison.zh-cn.md
+++ b/doc/features/comparison.zh-cn.md
@@ -49,7 +49,7 @@ _表格中的符号含义:_
 | 内置容器 Registry     | ✓                                                  | ✘    | ✓         | ✓         | ✓         | ✘              | ✘            |
 | 外部 Git 镜像         | ✓                                                  | ✓    | ✘         | ✘         | ✓         | ✓              | ✓            |
 | WebAuthn (2FA)        | ✓                                                  | ✘    | ✓         | ✓         | ✓         | ✓              | ?            |
-| 内置 CI/CD            | ✘                                                  | ✘    | ✓         | ✓         | ✓         | ✘              | ✘            |
+| 内置 CI/CD            | ✓                                                  | ✘    | ✓         | ✓         | ✓         | ✘              | ✘            |
 | 子组织：组织内的组织  | [✘](https://github.com/go-gitea/gitea/issues/1872) | ✘    | ✘         | ✓         | ✓         | ✘              | ✓            |
 
 #### 代码管理
diff --git a/doc/features/comparison.zh-tw.md b/doc/features/comparison.zh-tw.md
index 4da9c74e..bde17794 100644
--- a/doc/features/comparison.zh-tw.md
+++ b/doc/features/comparison.zh-tw.md
@@ -51,7 +51,7 @@ menu:
 | 內建 Container Registry  | [✘](https://github.com/go-gitea/gitea/issues/2316) | ✘    | ✘         | ✓         | ✓         | ✘         | ✘            |
 | 對外部 Git 鏡像          | ✓                                                  | ✓    | ✘         | ✘         | ✓         | ✓         | ✓            |
 | FIDO (2FA)               | ✓                                                  | ✘    | ✓         | ✓         | ✓         | ✓         | ✘            |
-| 內建 CI/CD               | ✘                                                  | ✘    | ✓         | ✓         | ✓         | ✘         | ✘            |
+| 內建 CI/CD               | ✓                                                  | ✘    | ✓         | ✓         | ✓         | ✘         | ✘            |
 | 子群組: 群組中的群組     | ✘                                                  | ✘    | ✘         | ✓         | ✓         | ✘         | ✓            |
 
 ## 程式碼管理