diff --git a/.vuepress/config.js b/.vuepress/config.js
index 6889074..cd2a62e 100644
--- a/.vuepress/config.js
+++ b/.vuepress/config.js
@@ -36,54 +36,55 @@ module.exports = {
     docsRepo: 'yeasy/docker_practice',
     docsDir: '/',
     editLinks: true,
-    nav: [{
-      text: '安装 Docker',
-      link: '/install/',
-    },
-    {
-      text: 'Docker 入门',
-      link: '/'
-    },
-    {
-      text: 'Docker 实战',
-      link: '/cases/os/'
-    },
-    {
-      text: 'CI/CD',
-      link: '/cases/ci/'
-    },
-    {
-      text: 'Docker 仓库',
-      link: '/repository/'
-    },
-    {
-      text: '底层实现',
-      link: '/underly/',
-    },
-    {
-      text: 'Compose',
-      link: '/compose/',
-    },
-    {
-      text: 'Kubernetes',
-      link: '/kubernetes/',
-    },
-    {
-      text: "云计算",
-      link: "/cloud/",
-    },
-    {
-      text: 'GitHub',
-      link: 'https://github.com/yeasy/docker_practice'
-    },
-    // {
-    //   text: '捐赠',
-    //   link: ''
-    // },
-    {
-      text: '腾讯云容器服务',
-      link: 'https://cloud.tencent.com/act/cps/redirect?redirect=10058&cps_key=3a5255852d5db99dcd5da4c72f05df61'
-    },
+    nav: [
+      {
+        text: '微信交流群',
+        link: 'https://yewm28.coding-pages.com/wechat.jpg',
+      },
+      {
+        text: '小程序',
+        link: 'https://yewm28.coding-pages.com/49682252-3ac4c500-faec-11e8-86ab-eafe0139be6b.jpg',
+      },
+      {
+        text: '安装 Docker',
+        link: '/install/',
+      },
+      {
+        text: 'Docker 入门',
+        link: '/'
+      },
+      {
+        text: 'Docker 实战',
+        link: '/cases/os/'
+      },
+      {
+        text: 'CI/CD',
+        link: '/cases/ci/'
+      },
+      {
+        text: 'Compose',
+        link: '/compose/',
+      },
+      {
+        text: 'Kubernetes',
+        link: '/kubernetes/',
+      },
+      {
+        text: "云计算",
+        link: "/cloud/",
+      },
+      {
+        text: 'GitHub',
+        link: 'https://github.com/yeasy/docker_practice'
+      },
+      // {
+      //   text: '捐赠',
+      //   link: ''
+      // },
+      {
+        text: '腾讯云容器服务',
+        link: 'https://cloud.tencent.com/act/cps/redirect?redirect=10058&cps_key=3a5255852d5db99dcd5da4c72f05df61'
+      },
       // {
       //   text: '语言',
       //   items: [{
@@ -146,20 +147,6 @@ module.exports = {
         'mirror',
         'experimental',
       ],
-      '/underly/': [
-        'arch',
-        'namespace',
-        'cgroups',
-        'ufs',
-        'container_format',
-        'network',
-      ],
-      '/repository/': [
-        'dockerhub',
-        'registry',
-        'registry_auth',
-        'nexus3_registry',
-      ],
       '/cases/os/': [
         {
           title: "操作系统",
@@ -264,6 +251,17 @@ module.exports = {
             'container/rm',
           ],
         },
+        {
+          title: "Docker 仓库",
+          collapsable: false,
+          children: [
+            'repository/',
+            'repository/dockerhub',
+            'repository/registry',
+            'repository/registry_auth',
+            'repository/nexus3_registry',
+          ],
+        },
         {
           title: "数据管理",
           collapsable: false,
@@ -323,6 +321,19 @@ module.exports = {
             'security/summary',
           ],
         },
+        {
+          title: "底层实现",
+          collapsable: false,
+          children: [
+            'underly/',
+            'underly/arch',
+            'underly/namespace',
+            'underly/cgroups',
+            'underly/ufs',
+            'underly/container_format',
+            'underly/network',
+          ],
+        },
         {
           title: "Docker Buildx",
           collapsable: false,
@@ -353,14 +364,6 @@ module.exports = {
             'coreos/install',
           ],
         },
-        {
-          title: "Docker 开源项目",
-          collapsable: false,
-          children: [
-            'opensource/',
-            'opensource/linuxkit',
-          ],
-        },
         'podman/',
         'appendix/faq/',
         {
diff --git a/SUMMARY.md b/SUMMARY.md
index 3fba084..3392212 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -147,8 +147,6 @@
     * [Travis CI](cases/ci/travis/README.md)
 * [在 IDE 中使用 Docker](ide/README.md)
     * [VS Code](ide/vsCode.md)
-* [Docker 开源项目](opensource/README.md)
-    * [LinuxKit](opensource/linuxkit.md)
 * [podman - 下一代 Linux 容器工具](podman/README.md)
 * [附录](appendix/README.md)
     * [附录一：常见问题总结](appendix/faq/README.md)
diff --git a/coreos/README.md b/coreos/README.md
index 9fbf860..ca63655 100644
--- a/coreos/README.md
+++ b/coreos/README.md
@@ -1,6 +1,6 @@
 # Fedora CoreOS
 
-`CoreOS` 是一个专门为安全和大规模运行容器化工作负载而构建的新 Fedora 版本，它是 Fedora Atomic Host 和 CoreOS Container Linux 的后续项目。
+`CoreOS` 是一个专门为安全和大规模运行容器化工作负载而构建的新 Fedora 版本，它是 Fedora Atomic Host 和 CoreOS Container Linux 的后继项目。
 
 `CoreOS` 的安装文件和运行依赖非常小，它提供了精简的 Linux 系统。它使用 Linux 容器在更高的抽象层来管理你的服务，而不是通过常规的包管理工具 `yum` 或 `apt` 来安装包。
 
diff --git a/image/dockerfile/copy.md b/image/dockerfile/copy.md
index d12b446..0d48233 100644
--- a/image/dockerfile/copy.md
+++ b/image/dockerfile/copy.md
@@ -32,3 +32,5 @@ COPY --chown=bin files* /mydir/
 COPY --chown=1 files* /mydir/
 COPY --chown=10:11 files* /mydir/
 ```
+
+如果源路径为文件夹，复制的时候不是直接复制该文件夹，而是将文件夹中的内容复制到目标路径。
diff --git a/image/dockerfile/user.md b/image/dockerfile/user.md
index 260b439..0fb7dab 100644
--- a/image/dockerfile/user.md
+++ b/image/dockerfile/user.md
@@ -18,7 +18,7 @@ RUN [ "redis-server" ]
 # 建立 redis 用户，并使用 gosu 换另一个用户执行命令
 RUN groupadd -r redis && useradd -r -g redis redis
 # 下载 gosu
-RUN wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/1.7/gosu-amd64" \
+RUN wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/1.12/gosu-amd64" \
     && chmod +x /usr/local/bin/gosu \
     && gosu nobody true
 # 设置 CMD，并以另外的用户执行