需求：
使用docker来启动nginx + tomcat 双进程，实际应用中，多进程还是比较常见的。
1: 创建dockerfile目录
mkdir -p /docker/web
2: 编写dockerfile: /docker/web/Dockerfile
FROM centos7 MAINTAINER lin test@163.com COPY CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo COPY nginx_install.sh /tmp/nginx_install.sh RUN sh /tmp/nginx_install.sh; rm -rf /usr/local/src/* RUN sed -i -e '/worker_processes/a daemon off;' /usr/local/nginx/conf/nginx.conf; COPY jdk-8u162-linux-x64.tar.gz /usr/local/src/jdk-8u162-linux-x64.tar.gz COPY tomcat_install.sh /tmp/tomcat_install.sh RUN sh /tmp/tomcat_install.sh; rm -rf /usr/local/src/* COPY supervisor_install.sh /tmp/supervisor_install.sh COPY supervisord.conf /etc/supervisord.conf COPY start_tomcat.sh /usr/local/tomcat/bin/mystart.sh RUN sh /tmp/supervisor_install.sh; rm -rf /tmp/*.sh
3: dockerfile集成的配置文件及安装文件
3.1 默认源下载较慢，更换yum源，以下CentOS-Base.repo配置文件拷贝到容器里更换
COPY CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo [root@docker web]# cat CentOS-Base.repo [base] name=CentOS-$releasever - Base baseurl=http://mirrors.163.com/centos/$releasever/os/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 #released updates [updates] name=CentOS-$releasever - Updates baseurl=http://mirrors.163.com/centos/$releasever/updates/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 #additional packages that may be useful [extras] name=CentOS-$releasever - Extras baseurl=http://mirrors.163.com/centos/$releasever/extras/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-$releasever - Plus baseurl=http://mirrors.163.com/centos/$releasever/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
3.2nginx安装脚本
[root@docker web]# cat nginx_install.sh yum install -y wget tar gcc gcc-c++ make pcre pcre-devel zlib zlib-devel openssl openssl-devel cd /usr/local/src wget 'http://nginx.org/download/nginx-1.12.2.tar.gz' tar -zxvf nginx-1.12.2.tar.gz cd nginx-1.12.2 ./configure --prefix=/usr/local/nginx --with-http_ssl_module --with-stream --with-stream_ssl_module make make install exit 0
3.3tomcat安装脚本
[root@docker web]# cat tomcat_install.sh yum install -y wget tar cd /usr/local/src/ tar -zxvf jdk-8u162-linux-x64.tar.gz mv jdk1.8.0_162 /usr/local/ #/usr/local/jdk1.8.0_162/bin/java -version #配置java环境变量 echo 'JAVA_HOME=/usr/local/jdk1.8.0_162/' >>/etc/profile echo 'PATH=$PATH:$JAVA_HOME/bin' >>/etc/profile echo 'CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:$CLASSPATH' >>/etc/profile source /etc/profile wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.5.38/bin/apache-tomcat-8.5.38.tar.gz tar -zxvf apache-tomcat-8.5.38.tar.gz mv apache-tomcat-8.5.38 /usr/local/tomcat
