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 Dockerfile
FROM centos:7
RUN yum install -y gcc pcre pcre-devel devel zlib-devel make
ADD nginx-1.22.0.tar.gz /mnt/nginx
WORKDIR /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 make
RUN make install
EXPOSE 80
VOLUME [\”/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/null
FROM centos:7
RUN yum install -y gcc pcre pcre-devel devel zlib-devel make &> /dev/null && yum clean all
ADD nginx-1.22.0.tar.gz /mnt/nginx
WORKDIR /mnt/nginx/nginx-1.22.0
RUN sed -i \’s/CFLAGS=\”$CFLAGS -g\”/#CFLAGS=\”$CFLAGS -g\”/g\’ auto/cc/gcc
RUN ./configure –prefix=/usr/local/nginx &> /dev/null
RUN make &> /dev/null
RUN make install &> /dev/null
RUN rm -rf /mnt/nginx/nginx-1.22.0
EXPOSE 80
VOLUME [\”/usr/local/nginx/html\”]
CMD [\”/usr/local/nginx/sbin/nginx\”\”-g\”,\”daemon off;\”]
三、减少RUN构建
FROM centos:7
ADD nginx-1.22.0.tar.gz /mnt/nginx
WORKDIR /mnt/nginx/nginx-1.22.0
RUN 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-1.22.0
EXPOSE 80
VOLUME [\”/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-1.22.0
RUN 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-1.22.0
FROM centos:7
EXPOSE 80
VOLUME [\”/usr/local/nginx/html\”]
COPY –from=build /usr/local/nginx /usr/local/nginx
CMD [\”/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.gz
docker import debian-7.0-x86-minimal.tar.gz — debian:v1 生成镜像
docker images 查看
总结
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