Docket 第五章

1.dockerFile定制镜像

定义一个nginx配置文件

FROM nginx
RUN echo '这是一个本地构建的nginx镜像' > /usr/share/nginx/html/index.html

　　

[root@qicheng Dockerfile]# docker build -t nginx:v3 .
Sending build context to Docker daemon  2.048kB
Step 1/2 : FROM nginx
latest: Pulling from library/nginx
852e50cd189d: Pull complete 
a29b129f4109: Pull complete 
b3ddf1fa5595: Pull complete 
c5df295936d3: Pull complete 
232bf38931fc: Pull complete 
Digest: sha256:c3a1592d2b6d275bef4087573355827b200b00ffc2d9849890a4f3aa2128c4ae
Status: Downloaded newer image for nginx:latest
 ---> daee903b4e43
Step 2/2 : RUN echo '这是一个本地构建的nginx镜像' > /usr/share/nginx/html/index.html
 ---> Running in 1d773667d025
Removing intermediate container 1d773667d025
 ---> ed8d27c2e297
Successfully built ed8d27c2e297
Successfully tagged nginx:v3