Docker 构建自己的容器(学习笔记二)
Dockerfile
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首先需要的包和dockerfile放在一起
[root@localhost docker-file]# ls
Dockerfile nginx-1.9.3.tar.gz pcre-8.37.tar.gz
[root@localhost docker-file]# pwd
/opt/docker-file
[root@localhost docker-file]#
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创建dockerfile
[root@localhost docker-file]# vim Dockerfile
#base images,name or id 可以是镜像名字或者镜像ID
FROM 3bee3060bfc8
#maintainer 作者
MAINTAINER wangzz
#add 把包添加到容器的指定目录，如果是tar包会自动解压
ADD pcre-8.37.tar.gz /usr/local/src
ADD nginx-1.9.3.tar.gz /usr/local/src
#run 在容器里运行命令安装nginx需要软件
RUN yum install -y wget gcc gcc-c++ make openssl-devel
#run 在容器里运行命令创建用户
RUN useradd -s /sbin/nologin -M www
#workdir 相当于cd到这个目录
WORKDIR /usr/local/src/nginx-1.9.3
#run 在容器里运行命令进行编译安装
RUN ./configure --prefix=/usr/local/nginx --user=www --group=www --with-http_ssl_module --with-http_stub_status_module --with-pcre=/usr/local/src/pcre-8.37 && make && make install
#run 在容器里运行命令更改nginx配置文件，使其前台运行
RUN echo "daemon off;" >> /usr/local/nginx/conf/nginx.conf
#env 将nginx启动命令加到环境变量里
ENV PATH /usr/local/nginx/sbin:$PATH
#映射80端口
EXPOSE 80
执行nginx命令
CMD ["nginx"]
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执行dockerfile
[root@localhost docker-file]# docker build -t my-nginx-1:v1 /opt/docker-file/
当成功后会出现这个，说明执行成功
Successfully built 21273b8e163a
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查看镜像
[root@localhost docker-file]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
my-nginx-1 v1 21273b8e163a 14 minutes ago 429.1 MB
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使用创建好的镜像启动容器
[root@localhost docker-file]# docker run -dit --name mynginx 21273b8e163a
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查看运行的容器
[root@localhost docker-file]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
aa30accbfc06 21273b8e163a "nginx" 3 seconds ago Up 2 seconds 80/tcp mynginx
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访问这个容器的80端口，看nginx是否安装启动成功
[root@localhost docker-file]# curl 172.17.0.3
Welcome to nginx!
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
Welcome to nginx!
If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.
For online documentation and support please refer to
Commercial support is available at
Thank you for using nginx.
