ENTRYPOINT 入口点
<ENTRYPOINT> "<CMD>"场景一:让镜像变成像命令一样使用
FROM ubuntu:18.04
RUN apt-get update \
&& apt-get install -y curl \
&& rm -rf /var/lib/apt/lists/*
CMD [ "curl", "-s", "https://ip.cn" ]$ docker run myip
当前 IP:61.148.226.66 来自:北京市 联通$ docker run myip -i
docker: Error response from daemon: invalid header field value "oci runtime error: container_linux.go:247: starting container process caused \"exec: \\\"-i\\\": executable file not found in $PATH\"\n".场景二:应用运行前的准备工作
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