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<>一、镜像导出 save
<>查看镜像
docker images
<>导出镜像
docker save -o test.tar image_name
或者
docker save image_name > /test.tar
<>二、容器导出 export
<>导出容器，命令格式为：
docker export [-o|--output[=""]] CONTATINER
或
docker export 容器id/name >文件名.tar
例如：
docker export -o test.img test
test.img : 这里可以导出tar文件 ， 也可以导出二进制镜像文件img
test : 需要导出的容器名， 通过docker ps查看
<>三、导入压缩包（包括压缩的镜像和容器）
<>1.import
docker import [-c|--change[=[]]] [-m|--message[=MESSAGE]] file|URL|-[REPOSITORY
[:YAG]]
例如：
docker import test.img test
test : 为镜像名
<>2.load
docker load --input /test.tar
<>区别：
* docker save保存的是镜像（image），docker export保存的是容器（container）；
* docker load用来载入镜像包，docker import用来载入容器包，但两者都会恢复为镜像；
* docker load不能对载入的镜像重命名，而docker import可以为镜像指定新名称。
<>四、部署镜像
<>启动镜像
docker run -d --name container_test --privileged -it test:latest /usr/sbin/init
