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DockerFile 分为四部分:基础镜像、维护者、镜像操作指令、容器启动时执行指令

WORKDIR 指定工作目录,类似于 cd,定位到某一个目录

WORKDIR /usr/local/nginx

RUN 构建镜像时运行指令

RUN apk add nginx && mkdir /run/nginx/

构建指令:

docker build -f dockerfile-path .