spring-jdbc shell-find&xargs

docker/6 DockerFile.md

@@ -1,4 +1,167 @@
-## 概念
+# Dockerfile
+
+## 1 DockerFile介绍
+
+dockerfile是用来构建docker镜像文件！命令参数脚本
+
+构建步骤
+1. dockerfile
+2. docker build 构建一个镜像
+3. docker run 运行镜像
+4. docker push 发布一个镜像
+
+dockerhub官方的镜像，会对应到github上一个仓库中的Dockerfile
+
+
+## 2 DockerFile构建过程
+
+### 指令
+```
+FROM 基础镜像
+MAINTAINER 镜像的维护者信息
+RUN Docker镜像构建的时候需要的命令
+ADD 步骤：tomcat的镜像中，tomcat的压缩包
+WORKDIR 镜像的工作目录
+VOLUME -v挂载的目录位置
+EXPOSE -p暴露端口
+
+
+CMD 指定这个容器启动的时候运行的命令，只有最后一个会生效，而且可悲替代
+ENTRYPOINT 指定这个容器启动的时候运行的命令，可以追加命令
+ONBUILD 当构建一个被继承的DockerfileFile，就会影响ONBUILD指令。触发指令
+COPY 类似ADD命令，将文件COPY到镜像中。
+ENV 构建的时候设置环境变量
+```
+
+1. 每个保留关键字指令都是大写字母
+2. `#`表示注释
+3. 每一个指令都会创建提交一个新的镜像层，并提交
+
+### 构建过程
+![](image/2022-10-09-22-01-02.png)
+
+dockerfile是面向开发的，发布项目、做镜像需要编写dockerfile。
+
+* DockerFile：构建文件，定义了一切的步骤、源代码
+* DockerImages：通过DockerFile构建生成的镜像，最终发布和运行的产品
+* Docker容器：容器就是镜像运行起来，提供服务器
+
+### 实践：创建自己的centos
+
+> docker hub 中99%镜像都是从FROM scratch
+
+1. 编写dockerfile的文件
+
+```
+➜  dockerfile git:(master) ✗ cat mydockerfile        
+FROM centos
+MAINTAINER yinkanglong<yinkanglong.163.com>
+
+
+ENV MYPATH /usr/local
+WORKDIR $MYPATH
+
+RUN yum -y install vim
+RUN yum -y install net-tools
+
+
+EXPOSE 80
+
+CMD echo $MYPATH
+CMD echo "----end----"
+
+CMD /bin/bash
+```
+2. docker builid 运行镜像
+
+```
+dockerfile git:(master) ✗ docker build -f mydockerfile -t mycentos:0.1 .
+[+] Building 64.0s (8/8) FINISHED                                                                                                
+ => [internal] load build definition from mydockerfile                                                                      0.2s
+ => => transferring dockerfile: 265B                                                                                        0.1s
+ => [internal] load .dockerignore                                                                                           0.1s
+ => => transferring context: 2B                                                                                             0.0s
+ => [internal] load metadata for docker.io/library/centos:7                                                                 4.5s
+ => [1/4] FROM docker.io/library/centos:7@sha256:c73f515d06b0fa07bb18d8202035e739a494ce760aa73129f60f4bf2bd22b407          20.6s
+ => => resolve docker.io/library/centos:7@sha256:c73f515d06b0fa07bb18d8202035e739a494ce760aa73129f60f4bf2bd22b407           0.0s
+ => => sha256:c73f515d06b0fa07bb18d8202035e739a494ce760aa73129f60f4bf2bd22b407 1.20kB / 1.20kB                              0.0s
+ => => sha256:dead07b4d8ed7e29e98de0f4504d87e8880d4347859d839686a31da35a3b532f 529B / 529B                                  0.0s
+ => => sha256:eeb6ee3f44bd0b5103bb561b4c16bcb82328cfe5809ab675bb17ab3a16c517c9 2.75kB / 2.75kB                              0.0s
+ => => sha256:2d473b07cdd5f0912cd6f1a703352c82b512407db6b05b43f2553732b55df3bc 76.10MB / 76.10MB                           15.0s
+ => => extracting sha256:2d473b07cdd5f0912cd6f1a703352c82b512407db6b05b43f2553732b55df3bc                                   5.3s
+ => [2/4] WORKDIR /usr/local                                                                                                0.6s
+ => [3/4] RUN yum -y install vim                                                                                           21.9s
+ => [4/4] RUN yum -y install net-tools                                                                                      9.3s
+ => exporting to image                                                                                                      6.1s 
+ => => exporting layers                                                                                                     6.1s 
+ => => writing image sha256:87b7be8e41c9cc237c733930df0513f40a708fb0944f5ef48e815979e6880ee2                                0.0s 
+ => => naming to docker.io/library/mycentos:0.1                                                                             0.0s 
+                                                                                                                                 
+Use 'docker scan' to run Snyk tests against images to find vulnerabilities and learn how to fix them                             
+```
+3. 测试运行docker run，验证了 vim和ifconfig命令可行
+
+```
+dockerfile git:(master) ✗ docker run -it mycentos:0.1    
+[root@f318e4ba01b3 local]# pwd
+/usr/local
+[root@f318e4ba01b3 local]# ifconfig
+eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
+        inet 172.17.0.2  netmask 255.255.0.0  broadcast 172.17.255.255
+        ether 02:42:ac:11:00:02  txqueuelen 0  (Ethernet)
+        RX packets 10  bytes 876 (876.0 B)
+        RX errors 0  dropped 0  overruns 0  frame 0
+        TX packets 0  bytes 0 (0.0 B)
+        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
+
+lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
+        inet 127.0.0.1  netmask 255.0.0.0
+        loop  txqueuelen 1000  (Local Loopback)
+        RX packets 0  bytes 0 (0.0 B)
+        RX errors 0  dropped 0  overruns 0  frame 0
+        TX packets 0  bytes 0 (0.0 B)
+        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
+
+[root@f318e4ba01b3 local]# vim where
+[root@f318e4ba01b3 local]# which vim
+/usr/bin/vim
+```
+ 
+### 实践：CMD和ENTRYPOINT
+
+
+### 实践：制作tomcat镜像 
+
+
+
+### 发布自己的镜像
+
+> DockeHub
+
+1. 在https://hub.docker.com创建账号
+2. 向服务器提交自己的镜像
+3. 登录 docker login -u yinkanglong
+4. 推送 docker push yinkanglong/mycentos:01
+
+
+### 发布自己的镜像到阿里云
+
+1. 登录阿里云
+
+### docker save & docker load
+
+将镜像保存压缩包
+
+将压缩包加载为镜像
+
+## 总结
+
+![](image/2022-10-09-23-25-09.png)
+
+
+
+
+
 
 ### 简介
 

docker/dockerfile/mydockerfile

@@ -0,0 +1,17 @@
+FROM centos:7
+MAINTAINER yinkanglong<yinkanglong.163.com>
+
+
+ENV MYPATH /usr/local
+WORKDIR $MYPATH
+
+RUN yum -y install vim
+RUN yum -y install net-tools
+
+
+EXPOSE 80
+
+CMD echo $MYPATH
+CMD echo "----end----"
+
+CMD /bin/bash