commit

commit

Description

Create a new image from a container’s changes

Usage

docker commit [OPTIONS] CONTAINER [REPOSITORY][:TAG]

Options

Name,shorthand	Default	Description
--author , -a		Author (e.g., “John Hannibal Smith hannibal@a-team.com”)
--change , -c		Apply Dockerfile instruction to the created image
--message , -m		Commit messae
--pause , -p	true	Pause container during commit

ex:

启动busybox服务,因为busybox没有服务启动于前台，所以必须与其交互(sh)。所以要在busybox中启动httpd服务
~]# docker run --name b1 -it docker.io/busybox 
/ # mkdir -p /app/www/
/ # echo "<h1>Hello World！</h1>" > /app/www/index.html
/ # /bin/httpd -f -h /app/www/
httpd -f(启动于前台)，-h,服务页面路径地址

切换至另一个终端，并制作新的images
~]# docker images
REPOSITORY               TAG                 IMAGE ID            CREATED             SIZE
docker.io/busybox        latest              f6e427c148a7        2 weeks ago         1.15 MB

[root@centos7 ~]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
f10f16279840        docker.io/busybox   "sh"                13 minutes ago      Up 12 minutes                           b1

~]# docker images
REPOSITORY               TAG                 IMAGE ID            CREATED             SIZE
docker.io/xiaoniaoo/dm   v1.0.1-bhttpd       5c1d55da33fd        48 minutes ago      1.15 MB
docker.io/busybox        latest              f6e427c148a7        2 weeks ago         1.15 MB

~]# docker commit -a "<xiaoniaoo>" -p -c='CMD ["/bin/httpd","-f","-h","/app/www/"]' b1 docker.io/xiaoniaoo/dm:v1.0.1-shttpd

~]# docker push docker.io/xiaoniaoo/dm:v1.0.1-shttpd

在另一台机器上，拉镜像并启动，看httpd服务是否启动并剥离终端
~]# docker run --name bh -d docker.io/xiaoniaoo/dm:v1.0.1-shttpd
~]# docker inspect bh
~]# curl http://172.17.0.2
<h1>Dai</h1>
镜像制作成功，并可用