docker笔记---构建Nginx和Tomcat镜像

通常编译安装一个软件的基本步骤如下：

1. 安装依赖包
2. ./configure 检查环境依赖
3.  make 编译
4. make install 安装

构建Nginx 镜像：

 Dockerfile内容如下：

FROM centos:7
LABEL maintainer www.ctnrs.com
RUN yum install -y gcc gcc-c++ make \
    openssl-devel pcre-devel gd-devel \
    iproute net-tools telnet wget curl && \
    yum clean all && \
    rm -rf /var/cache/yum/*

ADD nginx-1.15.5.tar.gz /
RUN cd nginx-1.15.5 && \
    ./configure --prefix=/usr/local/nginx \
    --with-http_ssl_module \
    --with-http_stub_status_module && \
    make -j 4 && make install && \
    mkdir /usr/local/nginx/conf/vhost && \
    cd / && rm -rf nginx* && \
    ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

ENV PATH $PATH:/usr/local/nginx/sbin
COPY nginx.conf /usr/local/nginx/conf/nginx.conf
WORKDIR /usr/local/nginx
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

docker build -t nginx:v2 .
docker run -d --name web3 -p 90:80 -v  /opt/wwwroot/:/usr/share/nginx/html nginx:v2

 访问为默认页面：

 原因：网站根目录不同，yum与源码安装不同导致

修改根目录，重新启动：

docker run -d --name web4 -p 91:80 -v  /opt/wwwroot/:/usr/local/nginx/html nginx:v

 构建Tomcat镜像：

Dockerfile内容如下：

FROM centos:7
MAINTAINER www.ctnrs.com

ENV VERSION=8.5.43

RUN yum install java-1.8.0-openjdk wget curl unzip iproute net-tools -y && \
    yum clean all && \
    rm -rf /var/cache/yum/*

ADD apache-tomcat-${VERSION}.tar.gz /usr/local/
RUN mv /usr/local/apache-tomcat-${VERSION} /usr/local/tomcat && \
    sed -i '1a JAVA_OPTS="-Djava.security.egd=file:/dev/./urandom"' /usr/local/tomcat/bin/catalina.sh && \
    ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

ENV PATH $PATH:/usr/local/tomcat/bin

WORKDIR /usr/local/tomcat

EXPOSE 8080
CMD ["catalina.sh", "run"]

docker build -t tomcat:v1 .
docker run -d -p 8081:8080 tomcat:v1

访问是默认页面：

docker ps -l
docker exec -it 6a55d24ef8de bash
cd /usr/local/tomcat/webapps/ROOT
vi index.jsp

修改后访问成功： 

启动另一个tomcat容器挂载之前的目录，访问成功

docker run -d -p 8082:8080 -v  /opt/wwwroot/:/usr/local/tomcat/webapps/ROOT tomcat:v1