diff --git "a/01 NGINX Plus \345\256\211\350\243\205\351\203\250\347\275\262/Readme.md" "b/01 NGINX Plus \345\256\211\350\243\205\351\203\250\347\275\262/Readme.md"
index 1d831a5c23fb035cbdbf0900aef2708f646f3bc1..81e7e0c2f096ddbee335e0f7d8d18b322351b89e 100644
--- "a/01 NGINX Plus \345\256\211\350\243\205\351\203\250\347\275\262/Readme.md"	
+++ "b/01 NGINX Plus \345\256\211\350\243\205\351\203\250\347\275\262/Readme.md"	
@@ -469,3 +469,71 @@
 
 刚才的环境中能否启动多个NGINX Plus实例，是否会冲突？
 
+# 实验3 Docker环境安装
+
+需要提前准备好带有Docker的Linux环境，推荐20.10以上版本
+
+## 实验步骤
+
+1.  将下载好的 nginx-mgmt-suite-acm-trail.crt 和 nginx-mgmt-suite-acm-trail.key 文件导入到/root/Docker文件夹中，并重命名为 nginx-repo.crt 和 nginx-repo.key
+
+    ```bash
+    mkdir -p /root/Docker
+    cd /root/Docker
+    cp nginx-mgmt-suite-acm-trail.crt /root/Docker/ssl/nginx-repo.crt
+    cp nginx-mgmt-suite-acm-trail.key /root/Docker/ssl/nginx-repo.key
+    ```
+
+2.  在同个文件夹下导入 Dockerfile
+
+    ```bash
+    wget https://gist.githubusercontent.com/nginx-gists/36e97fc87efb5cf0039978c8e41a34b5/raw/a28ca796fc22fa243788afafdf9fff749a7a02b8/Dockerfile
+    ```
+
+3.  执行docker build指令制作镜像
+
+    ```bash
+    [root@centos docker]# docker build --no-cache -t nginxplus --secret id=nginx-crt,src=nginx-repo.crt --secret id=nginx-key,src=nginx-repo.key .
+    [+] Building 25.7s (6/6) FINISHED                                                                                                             
+    => [internal] load build definition from Dockerfile                                                                                     0.0s
+    => => transferring dockerfile: 4.21kB                                                                                                   0.0s
+    => [internal] load .dockerignore                                                                                                        0.0s
+    => => transferring context: 2B                                                                                                          0.0s
+    => [internal] load metadata for docker.io/library/debian:bullseye-slim                                                                  1.2s
+    => CACHED [stage-0 1/2] FROM docker.io/library/debian:bullseye-slim@sha256:7606bef5684b393434f06a50a3d1a09808fee5a0240d37da5d181b1b121  0.0s
+    => [stage-0 2/2] RUN --mount=type=secret,id=nginx-crt,dst=nginx-repo.crt     --mount=type=secret,id=nginx-key,dst=nginx-repo.key       24.2s
+    => exporting to image                                                                                                                   0.2s
+    => => exporting layers                                                                                                                  0.2s
+    => => writing image sha256:bdb678abc3c94c5d298db36dd164588747f07e79a681e31760388d79a63656ec                                             0.0s 
+    => => naming to docker.io/library/nginxplus  
+    ```
+
+4.  查看镜像 
+
+    ```bash
+    [root@7ea1cc51-c56e-4e07-9f54-443b288a6832 docker]# docker images
+    REPOSITORY   TAG       IMAGE ID       CREATED              SIZE
+    nginxplus    latest    bdb678abc3c9   About a minute ago   93.4MB
+    ```
+
+5.  创建一个容器
+
+    ```bash
+    docker run --name mynginxplus -p 80:80 -d nginxplus
+    ```
+
+6.  查看容器运行情况
+
+    ```bash
+    [root@7ea1cc51-c56e-4e07-9f54-443b288a6832 docker]# docker ps | grep nginx
+    CONTAINER ID   IMAGE       COMMAND                  CREATED         STATUS         PORTS                               NAMES
+    d71576a9c297   nginxplus   "nginx -g 'daemon of…"   7 minutes ago   Up 7 minutes   0.0.0.0:80->80/tcp, :::80->80/tcp   mynginxplus
+    ```
+
+7.  进入容器，查看nginx版本
+
+    ```bash
+    [root@centos docker]# docker exec -ti d71576a9c297 /bin/bash
+    root@d71576a9c297:/# nginx -v
+    nginx version: nginx/1.23.4 (nginx-plus-r29)
+    ```
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