LABEL
可以为生成的镜像添加元数据标签信息，这些信息可以用来辅助过滤出特定镜像
代码语言：javascript复制LABEL <key>=<value> <key>=<value> <key>=<value> ...栗子一
代码语言：javascript复制# key 加了 "
LABEL "com.example.vendor"="ACME Incorporated"
# key 没有 "
LABEL com.example.label-with-value="foo"
LABEL version="1.0"
# 换行
LABEL description="This text illustrates
that label-values can span multiple lines."栗子二
一行添加多个 key=value
代码语言：javascript复制LABEL multi.label1="value1" multi.label2="value2" other="value3"等价写法
代码语言：javascript复制LABEL multi.label1="value1"
multi.label2="value2"
other="value3"通过 docker inspect 查看添加的元数据
代码语言：javascript复制> docker image inspect --format='' myimage
{
"com.example.vendor": "ACME Incorporated",
"com.example.label-with-value": "foo",
"version": "1.0",
"description": "This text illustrates that label-values can span multiple lines.",
"multi.label1": "value1",
"multi.label2": "value2",
"other": "value3"
}
