[docker] 利用Dockerfile多级构建缩减镜像大小

一、nginx

FROM centos:7 as build
#基于centos7镜像
MAINTAINER nginx on centos7 by lxy-20240125
#注释信息
ADD nginx-1.24.0.tar.gz /opt/
#将nginx安装包传输到镜像中
RUN yum -y install pcre-devel zlib-devel gcc gcc-c++ make && \
    cd /opt/nginx-1.24.0 && \
    ./configure --prefix=/usr/local/nginx --user=nginx --group=nginx --with-http_stub_status_module && \
    make && make install
#下载编译安装nginx的依赖环境，以及创建nginx用户，进入nginx目录中，完成配置--编译--安装
ENV PATH=$PATH:/usr/local/nginx/sbin/
#创建镜像的环境变量
ADD nginx.conf /usr/local/nginx/conf/nginx.conf
#将配置文件传输的镜像中,覆盖原有的nginx.conf文件
RUN chmod 777 -R /usr/local/nginx/html/
#修改权限
 
FROM centos:7
#再次基于centos7
COPY --from=build /usr/local/nginx /usr/local/nginx
#把第一阶段的安装目录复制到第二阶段
RUN useradd -M -s /sbin/nologin nginx
#必须的有个nginx用户
EXPOSE 80
#暴露80端口
CMD ["/usr/local/nginx/sbin/nginx", "-g", "daemon off;"]
#设置启动命令

二、php

FROM centos:7
#基础镜像为centos7
MAINTAINER this is php image <lxy:20240125>
#注释信息
ADD php-7.1.10.tar.bz2 /opt/
#将文件传输到镜像中
RUN yum -y install  gd libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-devel zlib zlib-devel curl curl-devel openssl openssl-devel gcc gcc-c++ make pcre-develgcc gcc-c++ make pcre-devel && \
yum clean all && \
cd /opt/php-7.1.10 && \
 ./configure \
--prefix=/usr/local/php \
--with-mysql-sock=/usr/local/mysql/mysql.sock \
--with-mysqli \
--with-zlib \
--with-curl \
--with-gd \
--with-jpeg-dir \
--with-png-dir \
--with-freetype-dir \
--with-openssl \
--enable-fpm \
--enable-mbstring \
--enable-xml \
--enable-session \
--enable-ftp \
--enable-pdo \
--enable-tokenizer \
--enable-zip && make -j 2&& make install && \
useradd -M -s /sbin/nologin nginx
#通过RUN依次下载php的依赖环境，清理yum缓存
#进入文件，配置--编译--安装
#创建nginx用户
COPY php.ini    /usr/local/php/lib/php.ini
COPY php-fpm.conf /usr/local/php/etc/php-fpm.conf
COPY www.conf /usr/local/php/etc/php-fpm.d/www.conf
#将三个配置文件传输到镜像中
 
FROM centos:7
RUN yum -y install  gd libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-devel zlib zlib-devel curl curl-devel openssl openssl-devel gcc gcc-c++ make pcre-develgcc gcc-c++ make pcre-devel && \
yum clean all && \
useradd -M -s /sbin/nologin nginx
COPY --from=0 /usr/local/php /usr/local/php
EXPOSE 9000
#暴露9000端口
CMD [ "/usr/local/php/sbin/php-fpm", "-F" ]
#启动

三、mysql

FROM centos:7
#基于centos7镜像
MAINTAINER this is mysql image <lxy>
#注释信息
ADD mysql-boost-5.7.44.tar.gz /opt/
#将安装包和配置文件传输到镜像中
RUN yum -y install make gcc gcc-c++ ncurses ncurses-devel bison cmake openssl-devel && \
 yum clean all && \
 cd /opt/mysql-5.7.44/ && \
    cmake \
-DCMAKE_INSTALL_PREFIX=/usr/local/mysql \
-DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.sock \
-DSYSCONFDIR=/etc \
-DSYSTEMD_PID_DIR=/usr/local/mysql \
-DDEFAULT_CHARSET=utf8  \
-DDEFAULT_COLLATION=utf8_general_ci \
-DWITH_EXTRA_CHARSETS=all \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DMYSQL_DATADIR=/usr/local/mysql/data \
-DWITH_BOOST=boost \
-DWITH_SYSTEMD=1 && make -j 2 && make install
#依次安装依赖环境，注意新版本必须要openssl环境，注意提示报错查看
#清理yum缓存
#进入mysql解压包中，完成cmake--编译--安装
FROM centos:7
COPY --from=0 /usr/local/mysql /usr/local/mysql
COPY my.cnf /etc/my.cnf
RUN useradd -M -s /sbin/nologin  mysql && \
    chown mysql:mysql /etc/my.cnf && \
    chown -R mysql:mysql /usr/local/mysql/ &&\
    /usr/local/mysql/bin/mysqld \
--initialize-insecure \
--user=mysql \
--basedir=/usr/local/mysql \
--datadir=/usr/local/mysql/data
#创建一个mysql用户
#修改配置文件的权限
#修改安装目录的权限
#直接用命令启动mysql
ENV PATH=/usr/local/mysql/bin:/usr/local/mysql/lib:$PATH
#配置环境变量
EXPOSE 3306
#暴露端口
CMD ["/usr/local/mysql/bin/mysqld"]
#设置默认启动命令