diff --git a/.drone.yml b/.drone.yml
index 12b698e..d4ced54 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -1,17 +1,15 @@
-workspace:
-  base: /srv/gitbook-src
-  path: .
-pipeline:
-  build:
-     image: yeasy/docker_practice:latest
-     # pull: true
-     environment:
-       - TZ=Asia/Shanghai
-     secrets: [key1, key2]
-     commands:
-       # - echo $${key1}
-       # - echo $KEY2
-       - docker-entrypoint.sh build
-     when:
-       event: [push, pull_request, tag, deployment]
-       branch: master
+kind: pipeline
+type: docker
+name: build
+steps:
+  - name: build
+    image: yeasy/docker_practice:latest
+    pull: if-not-exists # always never
+    environment:
+      TZ: Asia/Shanghai
+    commands:
+      - docker-entrypoint.sh build
+
+trigger:
+  branch:
+    - master
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..2a9b408
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,18 @@
+on:
+  push:
+  pull_request:
+
+name: CI
+
+jobs:
+  build:
+    name: Build GitBook
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+        with:
+          fetch-depth: 2
+      - name: Build
+        uses: docker://yeasy/docker_practice
+        with:
+          args: build
diff --git a/.travis/docker-entrypoint.sh b/.travis/docker-entrypoint.sh
index 6cb04ae..95026b4 100755
--- a/.travis/docker-entrypoint.sh
+++ b/.travis/docker-entrypoint.sh
@@ -6,12 +6,14 @@ if [ $1 = "sh" ];then sh ; exit 0; fi
 
 rm -rf node_modules _book
 
-cp -a . ../gitbook
+srcDir=$PWD
 
-cd ../gitbook
+cp -a . /srv/gitbook
+
+cd /srv/gitbook
 
 main(){
-  if [ "$1" = build ];then gitbook build; cp -a _book ../gitbook-src; echo $START; date "+%F %T"; exit 0; fi
+  if [ "$1" = build ];then gitbook build; cp -a _book $srcDir; echo $START; date "+%F %T"; exit 0; fi
   exec gitbook serve
   exit 0
 }
diff --git a/SUMMARY.md b/SUMMARY.md
index bced391..832d6bc 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -144,8 +144,10 @@
     * [CentOS Fedora](cases/os/centos.md)
     * [本章小结](cases/os/summary.md)
 * [实战案例-CI/CD](cases/ci/README.md)
-    * [Drone](cases/ci/drone.md)
-    * [Travis CI](cases/ci/travis.md)
+    * [GitHub Actions](cases/ci/actions/README.md)
+    * [Drone](cases/ci/drone/README.md)
+        * [部署 Drone](cases/ci/drone/install.md)
+    * [Travis CI](cases/ci/travis/README.md)
 * [Docker 开源项目](opensource/README.md)
     * [LinuxKit](opensource/linuxkit.md)
 * [附录](appendix/README.md)
diff --git a/cases/.image/drone-github.png b/cases/.image/drone-github.png
deleted file mode 100644
index 9e84569..0000000
Binary files a/cases/.image/drone-github.png and /dev/null differ
diff --git a/cases/ci/actions/README.md b/cases/ci/actions/README.md
new file mode 100644
index 0000000..42ad77f
--- /dev/null
+++ b/cases/ci/actions/README.md
@@ -0,0 +1,28 @@
+# GitHub Actions
+
+GitGub Actions 是 GitHub 推出的一款 CI/CD 工具。
+
+我们可以在每个 job 的 step 中使用 Docker 执行构建步骤。
+
+```yaml
+on: push
+
+name: CI
+
+jobs:
+  my-job:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+        with:
+          fetch-depth: 2
+      - name: run docker container
+        uses: docker://golang:alpine
+        with:
+          args: go version
+```
+
+## 参考资料
+
+* [Actions Docs](https://help.github.com/en/categories/automating-your-workflow-with-github-actions)
diff --git a/cases/ci/demo/drone/.drone.yml b/cases/ci/demo/drone/.drone.yml
deleted file mode 100644
index 675f9dd..0000000
--- a/cases/ci/demo/drone/.drone.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-workspace:
-  base: /srv/drone-demo
-  path: .
-
-pipeline:
-  build:
-     image: golang:alpine
-     # pull: true
-     environment:
-       - KEY=VALUE
-     secrets: [key1, key2]
-     commands:
-       # - echo $$KEY
-       - pwd
-       - ls
-       - CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .
-       - ./app
diff --git a/cases/ci/demo/drone/docker-compose.yml b/cases/ci/demo/drone/docker-compose.yml
deleted file mode 100644
index c1e4439..0000000
--- a/cases/ci/demo/drone/docker-compose.yml
+++ /dev/null
@@ -1,35 +0,0 @@
-version: '3'
-services:
-
-  drone-server:
-    image: drone/drone:0.8-alpine
-    ports:
-      - 443:443
-      # - "${PRO_PUBLIC_IP}:8000:8000"
-    volumes:
-      - drone-data:/var/lib/drone/:rw
-      # - ${SSL_PATH}:/etc/certs
-    restart: always
-    environment:
-      - DRONE_SECRET=drone
-      - DRONE_OPEN=false
-      - DRONE_ADMIN=GITHUB_SERNAME
-      - DRONE_HOST=https://drone.yeasy.com
-      - DRONE_GITHUB=true
-      - DRONE_GITHUB_CLIENT=${DRONE_GITHUB_CLIENT_PRO}
-      - DRONE_GITHUB_SECRET=${DRONE_GITHUB_SECRET_PRO}
-
-  drone-agent:
-    image: drone/agent:0.8-alpine
-    restart: always
-    depends_on:
-      - drone-server
-    volumes:
-      - /var/run/docker.sock:/var/run/docker.sock:rw
-    environment:
-      - DRONE_SECRET=drone
-      - DRONE_SERVER=drone-server:9000
-    dns: 114.114.114.114
-
-volumes:
-  drone-data:
diff --git a/cases/ci/drone.md b/cases/ci/drone.md
deleted file mode 100644
index 2e22b05..0000000
--- a/cases/ci/drone.md
+++ /dev/null
@@ -1,183 +0,0 @@
-## Drone
-
-基于 `Docker` 的 `CI/CD` 工具 `Drone` 所有编译、测试的流程都在 `Docker` 容器中进行。
-
-开发者只需在项目中包含 `.drone.yml` 文件，将代码推送到 git 仓库，`Drone` 就能够自动化的进行编译、测试、发布。
-
-本小节以 `GitHub` + `Drone` 来演示 `Drone` 的工作流程。当然在实际开发过程中，你的代码也许不在 GitHub 托管，那么你可以尝试使用 `Gogs` + `Drone` 来进行 `CI/CD`。
-
-### 要求
-
-* 拥有公网 IP、域名 (如果你不满足要求，可以尝试在本地使用 Gogs + Drone)
-
-* 域名 SSL 证书 (目前国内有很多云服务商提供免费证书)
-
-* 熟悉 `Docker` 以及 `Docker Compose`
-
-* 熟悉 `Git` 基本命令
-
-* 对 `CI/CD` 有一定了解
-
-### 新建 GitHub 应用
-
-登录 GitHub，在 https://github.com/settings/applications/new 新建一个应用。
-
-![](../.image/drone-github.png)
-
-接下来查看这个应用的详情，记录 `Client ID` 和 `Client Secret`，之后配置 Drone 会用到。
-
-### 配置 Drone
-
-我们通过使用 `Docker Compose` 来启动 `Drone`，编写 `docker-compose.yml` 文件。
-
-```yaml
-version: '3'
-services:
-
-  drone-server:
-    image: drone/drone:0.8-alpine
-    ports:
-      - 443:443
-      # - "${PRO_PUBLIC_IP}:8000:8000"
-    volumes:
-      - drone-data:/var/lib/drone/:rw
-      - ${SSL_PATH}:/etc/certs:rw
-    restart: always
-    environment:
-      - DRONE_SECRET=drone
-      - DRONE_OPEN=false
-      - DRONE_ADMIN=${GITHUB_SERNAME}
-      - DRONE_HOST=${DRONE_HOST}
-      - DRONE_GITHUB=true
-      - DRONE_GITHUB_CLIENT=${DRONE_GITHUB_CLIENT}
-      - DRONE_GITHUB_SECRET=${DRONE_GITHUB_SECRET}
-      - DRONE_SERVER_CERT=/etc/certs/drone.domain.com.crt
-      - DRONE_SERVER_KEY=/etc/certs/drone.domain.com.key
-
-  drone-agent:
-    image: drone/agent:0.8-alpine
-    restart: always
-    depends_on:
-      - drone-server
-    volumes:
-      - /var/run/docker.sock:/var/run/docker.sock:rw
-    environment:
-      - DRONE_SECRET=drone
-      - DRONE_SERVER=drone-server:9000
-    dns: 114.114.114.114
-
-volumes:
-  drone-data:
-```
-
-替换 `${SSL_PATH}` 为你网站的 SSL 证书路径。
-
-替换 `${GITHUB_SERNAME}` 为你 GitHub 的用户名，该用户将成为 Drone 的管理员。
-
-替换 `${DRONE_HOST}` 为你部署 Drone 的域名。
-
-替换 `${DRONE_GITHUB_CLIENT}` 为你 GitHub 应用的 `Client ID`
-
-替换 `${DRONE_GITHUB_SECRET}` 为你 GitHub 应用的 `Client Secret`
-
-*注意：* 如果你的服务器占用了 `443` 端口，请配置 Nginx 代理，这里不再赘述。
-
-#### 启动 Drone
-
-```bash
-$ docker-compose up -d
-```
-
-### Drone 关联项目
-
-在 Github 新建一个名为 `drone-demo` 的仓库。
-
-打开我们已经部署好的 Drone 网站，使用 GitHub 账号登录，在界面中关联刚刚新建的 `drone-demo` 仓库。
-
-### 编写项目源代码
-
-在本机初始化一个 git 仓库
-
-```bash
-$ mkdir drone-demo
-
-$ cd drone-demo
-
-$ git init
-
-$ git remote add origin git@github.com:username/drone-demo.git
-```
-
-这里以一个简单的 `Go` 程序为例，该程序输出 `Hello World!`
-
-编写 `app.go` 文件
-
-```go
-package main
-
-import "fmt"
-
-func main(){
-    fmt.Printf("Hello World!");
-}
-```
-
-编写 `.drone.yml` 文件
-
-```yaml
-workspace:
-  base: /srv/drone-demo
-  path: .
-
-pipeline:
-  build:
-     image: golang:alpine
-     # pull: true
-     environment:
-       - KEY=VALUE
-     secrets: [key1, key2]
-     commands:
-       - echo $$KEY
-       - pwd
-       - ls
-       - CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .
-       - ./app
-```
-
-`workspace` 指明 git 源代码克隆的目标路径，本例中 git 源代码将被克隆到 golang 容器中的 `/srv/drone-demo` 目录中。
-
-`pipeline` 指明构建所需的 Docker 镜像，环境变量，编译指令等。
-
-现在目录结构如下
-
-```bash
-.
-├── .drone.yml
-└── app.go
-```
-
-### 推送项目源代码到 GitHub
-
-```bash
-$ git add .
-
-$ git commit -m "test drone ci"
-
-$ git push origin master
-```
-
-### 查看项目构建过程及结果
-
-打开我们部署好的 `Drone` 网站，即可看到构建结果。
-
-![](../.image/drone-build.png)
-
-当然我们也可以把构建结果上传到 GitHub，Docker Registry，云服务商提供的对象存储，或者生产环境中。
-
-本书 GitBook 也使用 Drone 进行 CI/CD，具体配置信息请查看本书根目录 [`.drone.yml`](https://github.com/yeasy/docker_practice/blob/master/.drone.yml) 文件。
-
-## 参考链接
-
-* [Drone Github](https://github.com/drone/drone)
-
-* [Drone 文档](http://docs.drone.io/)
diff --git a/cases/ci/drone/.env.example b/cases/ci/drone/.env.example
new file mode 100644
index 0000000..8a6f5dd
--- /dev/null
+++ b/cases/ci/drone/.env.example
@@ -0,0 +1,6 @@
+DRONE_SERVER_HOST=
+DRONE_SERVER_PROTO=
+DRONE_RPC_SECRET=
+HOSTNAME=
+DRONE_GITHUB_CLIENT_ID=
+DRONE_GITHUB_CLIENT_SECRET=
diff --git a/cases/ci/drone/.gitignore b/cases/ci/drone/.gitignore
new file mode 100644
index 0000000..e8244fe
--- /dev/null
+++ b/cases/ci/drone/.gitignore
@@ -0,0 +1,2 @@
+.env
+ssl/*
diff --git a/cases/ci/drone/README.md b/cases/ci/drone/README.md
new file mode 100644
index 0000000..daa8de1
--- /dev/null
+++ b/cases/ci/drone/README.md
@@ -0,0 +1,99 @@
+# Drone
+
+基于 `Docker` 的 `CI/CD` 工具 `Drone` 所有编译、测试的流程都在 `Docker` 容器中进行。
+
+开发者只需在项目中包含 `.drone.yml` 文件，将代码推送到 git 仓库，`Drone` 就能够自动化的进行编译、测试、发布。
+
+本小节以 `GitHub` + `Drone` 来演示 `Drone` 的工作流程。当然在实际开发过程中，你的代码也许不在 GitHub 托管，那么你可以尝试使用 `Gogs` + `Drone` 来进行 `CI/CD`。
+
+## Drone 关联项目
+
+在 Github 新建一个名为 `drone-demo` 的仓库。
+
+打开我们已经 [部署好的 Drone 网站](install.md) 或者 [Drone Cloud](https://cloud.drone.io)，使用 GitHub 账号登录，在界面中关联刚刚新建的 `drone-demo` 仓库。
+
+## 编写项目源代码
+
+初始化一个 git 仓库
+
+```bash
+$ mkdir drone-demo
+
+$ cd drone-demo
+
+$ git init
+
+$ git remote add origin git@github.com:username/drone-demo.git
+```
+
+这里以一个简单的 `Go` 程序为例，该程序输出 `Hello World!`
+
+编写 `app.go` 文件
+
+```go
+package main
+
+import "fmt"
+
+func main(){
+    fmt.Printf("Hello World!\n");
+}
+```
+
+编写 `.drone.yml` 文件
+
+```yaml
+kind: pipeline
+type: docker
+name: build
+steps:
+- name: build
+  image: golang:alpine
+  pull: if-not-exists # always never
+  environment:
+    KEY: VALUE
+  commands:
+    - echo $KEY
+    - pwd
+    - ls
+    - CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .
+    - ./app
+
+trigger:
+  branch:
+  - master
+```
+
+现在目录结构如下
+
+```bash
+.
+├── .drone.yml
+└── app.go
+```
+
+## 推送项目源代码到 GitHub
+
+```bash
+$ git add .
+
+$ git commit -m "test drone ci"
+
+$ git push origin master
+```
+
+## 查看项目构建过程及结果
+
+打开我们部署好的 `Drone` 网站或者 Drone Cloud，即可看到构建结果。
+
+![](../.image/drone-build.png)
+
+当然我们也可以把构建结果上传到 GitHub，Docker Registry，云服务商提供的对象存储，或者生产环境中。
+
+本书 GitBook 也使用 Drone 进行 CI/CD，具体配置信息请查看本书根目录 [`.drone.yml`](https://github.com/yeasy/docker_practice/blob/master/.drone.yml) 文件。
+
+## 参考链接
+
+* [Drone Github](https://github.com/drone/drone)
+* [Drone 文档](http://docs.drone.io/)
+* [Drone 示例](https://github.com/docker-practice/drone-demo)
diff --git a/cases/ci/drone/demo/.drone.yml b/cases/ci/drone/demo/.drone.yml
new file mode 100644
index 0000000..f6c15aa
--- /dev/null
+++ b/cases/ci/drone/demo/.drone.yml
@@ -0,0 +1,19 @@
+kind: pipeline
+type: docker
+name: build
+steps:
+- name: build
+  image: golang:alpine
+  pull: if-not-exists # always never
+  environment:
+    KEY: VALUE
+  commands:
+    - echo $KEY
+    - pwd
+    - ls
+    - CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .
+    - ./app
+
+trigger:
+  branch:
+  - master
diff --git a/cases/ci/drone/demo/README.md b/cases/ci/drone/demo/README.md
new file mode 100644
index 0000000..7ab9812
--- /dev/null
+++ b/cases/ci/drone/demo/README.md
@@ -0,0 +1 @@
+# Drone Demo
diff --git a/cases/ci/demo/drone/app.go b/cases/ci/drone/demo/app.go
similarity index 55%
rename from cases/ci/demo/drone/app.go
rename to cases/ci/drone/demo/app.go
index 0141105..18f67bd 100644
--- a/cases/ci/demo/drone/app.go
+++ b/cases/ci/drone/demo/app.go
@@ -3,5 +3,5 @@ package main
 import "fmt"
 
 func main(){
-    fmt.Printf("Hello World!");
+    fmt.Printf("Hello World!\n");
 }
diff --git a/cases/ci/drone/docker-compose.yml b/cases/ci/drone/docker-compose.yml
new file mode 100644
index 0000000..d183b20
--- /dev/null
+++ b/cases/ci/drone/docker-compose.yml
@@ -0,0 +1,39 @@
+version: '3'
+
+services:
+
+  drone-server:
+    image: drone/drone:1
+    ports:
+      - 443:443
+      - 80:80
+    volumes:
+      - drone-data:/data:rw
+      - ./ssl:/etc/certs
+    restart: always
+    environment:
+      - DRONE_AGENTS_ENABLED=true
+      - DRONE_SERVER_HOST=${DRONE_SERVER_HOST:-drone.domain.com}
+      - DRONE_SERVER_PROTO=${DRONE_SERVER_PROTO:-https}
+      - DRONE_RPC_SECRET=${DRONE_RPC_SECRET:-secret}
+      - DRONE_GITHUB_SERVER=https://github.com
+      - DRONE_GITHUB_CLIENT_ID=${DRONE_GITHUB_CLIENT_ID}
+      - DRONE_GITHUB_CLIENT_SECRET=${DRONE_GITHUB_CLIENT_SECRET}
+
+  drone-agent:
+    image: drone/agent:1
+    restart: always
+    depends_on:
+      - drone-server
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:rw
+    environment:
+      - DRONE_RPC_PROTO=http
+      - DRONE_RPC_HOST=drone-server
+      - DRONE_RPC_SECRET=${DRONE_RPC_SECRET:-secret}
+      - DRONE_RUNNER_NAME=${HOSTNAME:-demo}
+      - DRONE_RUNNER_CAPACITY=2
+    dns: 114.114.114.114
+
+volumes:
+  drone-data:
diff --git a/cases/ci/drone/install.md b/cases/ci/drone/install.md
new file mode 100644
index 0000000..18d3b79
--- /dev/null
+++ b/cases/ci/drone/install.md
@@ -0,0 +1,87 @@
+# 部署 Drone
+
+## 要求
+
+* 拥有公网 IP、域名 (如果你不满足要求，可以尝试在本地使用 Gogs + Drone)
+
+* 域名 SSL 证书 (目前国内有很多云服务商提供免费证书)
+
+* 熟悉 `Docker` 以及 `Docker Compose`
+
+* 熟悉 `Git` 基本命令
+
+* 对 `CI/CD` 有一定了解
+
+## 新建 GitHub 应用
+
+登录 GitHub，在 https://github.com/settings/applications/new 新建一个应用。
+
+![](https://docs.drone.io/screenshots/github_application_create.png)
+
+接下来查看这个应用的详情，记录 `Client ID` 和 `Client Secret`，之后配置 Drone 会用到。
+
+## 配置 Drone
+
+我们通过使用 `Docker Compose` 来启动 `Drone`，编写 `docker-compose.yml` 文件。
+
+```yaml
+version: '3'
+
+services:
+
+  drone-server:
+    image: drone/drone:1
+    ports:
+      - 443:443
+      - 80:80
+    volumes:
+      - drone-data:/data:rw
+      - ./ssl:/etc/certs
+    restart: always
+    environment:
+      - DRONE_AGENTS_ENABLED=true
+      - DRONE_SERVER_HOST=${DRONE_SERVER_HOST:-https://drone.yeasy.com}
+      - DRONE_SERVER_PROTO=${DRONE_SERVER_PROTO:-https}
+      - DRONE_RPC_SECRET=${DRONE_RPC_SECRET:-secret}
+      - DRONE_GITHUB_SERVER=https://github.com
+      - DRONE_GITHUB_CLIENT_ID=${DRONE_GITHUB_CLIENT_ID}
+      - DRONE_GITHUB_CLIENT_SECRET=${DRONE_GITHUB_CLIENT_SECRET}
+
+  drone-agent:
+    image: drone/agent:1
+    restart: always
+    depends_on:
+      - drone-server
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:rw
+    environment:
+      - DRONE_RPC_PROTO=http
+      - DRONE_RPC_HOST=drone-server
+      - DRONE_RPC_SECRET=${DRONE_RPC_SECRET:-secret}
+      - DRONE_RUNNER_NAME=${HOSTNAME:-demo}
+      - DRONE_RUNNER_CAPACITY=2
+    dns: 114.114.114.114
+
+volumes:
+  drone-data:
+```
+
+新建 `.env` 文件，输入变量及其值
+
+```bash
+# 必填 服务器地址，例如 drone.domain.com
+DRONE_SERVER_HOST=
+DRONE_SERVER_PROTO=https
+DRONE_RPC_SECRET=secret
+HOSTNAME=demo
+# 必填 在 GitHub 应用页面查看
+DRONE_GITHUB_CLIENT_ID=
+# 必填 在 GitHub 应用页面查看
+DRONE_GITHUB_CLIENT_SECRET=
+```
+
+### 启动 Drone
+
+```bash
+$ docker-compose up -d
+```
diff --git a/cases/ci/travis.md b/cases/ci/travis/README.md
similarity index 100%
rename from cases/ci/travis.md
rename to cases/ci/travis/README.md
diff --git a/cases/ci/demo/travis/.travis.yml b/cases/ci/travis/demo/.travis.yml
similarity index 100%
rename from cases/ci/demo/travis/.travis.yml
rename to cases/ci/travis/demo/.travis.yml
diff --git a/cases/ci/demo/travis/Dockerfile b/cases/ci/travis/demo/Dockerfile
similarity index 100%
rename from cases/ci/demo/travis/Dockerfile
rename to cases/ci/travis/demo/Dockerfile