目录一、无优化构建镜像二、不需要输出的指令丢入/dev/null三、减少RUN构建四、多阶段构建五、使用更为轻量级的linux发行版本总结
一、无优化构建镜像mkdir /mnt/nginx vim DockerfileFROM centos:7RUN yum install -y gcc pcre pcre-devel devel zlib-devel makeADD nginx-1.22.0.tar.gz /mnt/nginxWORKDIR /mnt/nginx/nginx-1.22.0#关闭debug日志RUN sed -i \’s/CFLAGS=\”$CFLAGS -g\”/#CFLAGS=\”$CFLAGS -g\”/g\’ auto/cc/gcc RUN ./configure –prefix=/usr/local/nginx RUN makeRUN make installEXPOSE 80VOLUME [\”/usr/local/nginx/html\”]CMD [\”/usr/local/nginx/sbin/nginx\”,\”-g\”,\”daemon off;\”]
二、不需要输出的指令丢入/dev/nullFROM centos:7RUN yum install -y gcc pcre pcre-devel devel zlib-devel make &> /dev/null && yum clean allADD nginx-1.22.0.tar.gz /mnt/nginxWORKDIR /mnt/nginx/nginx-1.22.0RUN sed -i \’s/CFLAGS=\”$CFLAGS -g\”/#CFLAGS=\”$CFLAGS -g\”/g\’ auto/cc/gccRUN ./configure –prefix=/usr/local/nginx &> /dev/nullRUN make &> /dev/nullRUN make install &> /dev/nullRUN rm -rf /mnt/nginx/nginx-1.22.0EXPOSE 80VOLUME [\”/usr/local/nginx/html\”]CMD [\”/usr/local/nginx/sbin/nginx\”\”-g\”,\”daemon off;\”]
三、减少RUN构建FROM centos:7ADD nginx-1.22.0.tar.gz /mnt/nginxWORKDIR /mnt/nginx/nginx-1.22.0RUN yum install -y gcc pcre pcre-devel devel zlib-devel make &> /dev/null && \\ yum clean all && \\ sed -i \’s/CFLAGS=\”$CFLAGS -g\”/#CFLAGS=\”$CFLAGS -g\”/g\’ auto/cc/gcc && \\ ./configure –prefix=/usr/local/nginx &> /dev/null && \\ make &> /dev/null && make install &> /dev/null &&\\ rm -rf /mnt/nginx/nginx-1.22.0EXPOSE 80VOLUME [\”/usr/local/nginx/html\”]CMD [\”/usr/local/nginx/sbin/nginx\”,\”-g\”,\”daemon off;\”]
docker build -t nginx:v3 . 构建镜像
docker images查看镜像
四、多阶段构建FROM centos:7 as build ADD nginx-1.22.0.tar.gz /mnt/nginx WORKDIR /mnt/nginx/nginx-1.22.0RUN yum install -y gcc pcre pcre-devel devel zlib-devel make &> /dev/null && \\yum clean all &&\\sed -i \’s/CFLAGS=\”$CFLAGS -g\”/#CFLAGS=\”$CFLAGS -g\”/g\’ auto/cc/gcc && \\./configure –prefix=/usr/local/nginx &> /dev/null && \\make &>/dev/null && \\make install &>/dev/null && \\rm -rf /mnt/nginx/nginx-1.22.0FROM centos:7EXPOSE 80VOLUME [\”/usr/local/nginx/html\”]COPY –from=build /usr/local/nginx /usr/local/nginxCMD [\”/usr/local/nginx/sbin/nginx\”,\”-g\”,\”daemon off;\”]docker build -t nginx:v4 . 构建镜像docker images查看镜像
五、使用更为轻量级的linux发行版本
debianalpineapt addSandboxBusybox
#下载debian压缩包wget http://download.openvz.org/template/precreated/debian-7.0-x86-minimal.tar.gzdocker import debian-7.0-x86-minimal.tar.gz — debian:v1 生成镜像docker images 查看
总结
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