1、Dockerfile相关参数
FROM 构建新镜像是基于哪个镜像
LABEL 标签
RUN 构建镜像时运行的Shell命令
COPY 拷贝文件或目录到镜像中
ENV 设置环境变量
USER 为RUN、CMD和ENTRYPOINT执行命令指定运行用户
EXPOSE 声明容器运行的服务端口
WORKDIR 为RUN、CMD、ENTRYPOINT、COPY和ADD设置工作目录
ENTRYPOINT 运行容器时执行,如果有多个ENTRYPOINT指令,最后一个生效
CMD 运行容器时执行,如果有多个CMD指令,最后一个生效
1.1构建Nginx镜像
[root@k8s-node1 ~]# mkdir nginx [root@k8s-node1 ~]# cd nginx/ [root@k8s-node1 nginx]# cat Dockerfile # 名称:容器化的Nginx # 用途:Web服务 # 创建时间:2018.06.11 FROM centos LABEL MAINTAINER q RUN yum install epel-release -y RUN yum install -y nginx EXPOSE 80 WORKDIR /usr/local CMD ["nginx", "-g", "daemon off;"]
-t 指定名称 -f指定Dockerfile . 在dockerfile 上下文,. 代表当前目录
[root@k8s-node1 nginx]# docker build -t nginx:v1 -f Dockerfile .
查看镜像
[root@k8s-node1 nginx]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE nginx v1 4ab138f8031a 2 minutes ago 346MB
启动容器
[root@k8s-node1 nginx]# docker run -d -p 8887:80 nginx:v1 dc2e3f33171f49fb8ae9b9ddd21b1a0d1d46d33b37d31350b19e6cadef9e6be1
查看
[root@k8s-node1 nginx]# docker ps -l CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES dc2e3f33171f nginx:v1 "nginx -g 'daemon of…" 19 seconds ago Up 18 seconds 0.0.0.0:8887->80/tcp sad_hopper
访问
2、构建PHP镜像
[root@k8s-node1 dockerfile]# cd php/ [root@k8s-node1 php]# ls Dockerfile php-5.6.36.tar.gz php-fpm.conf php.ini [root@k8s-node1 php]# cat Dockerfile FROM centos:7 MAINTAINER www.ctnrs.com RUN yum install epel-release -y && \ yum install -y gcc gcc-c++ make gd-devel libxml2-devel \ libcurl-devel libjpeg-devel libpng-devel openssl-devel \ libmcrypt-devel libxslt-devel libtidy-devel autoconf \ iproute net-tools telnet wget curl && \ yum clean all && \ rm -rf /var/cache/yum/* COPY php-5.6.36.tar.gz / RUN tar zxf php-5.6.36.tar.gz && \ cd php-5.6.36 && \ ./configure --prefix=/usr/local/php \ --with-config-file-path=/usr/local/php/etc \ --enable-fpm --enable-opcache \ --with-mysql --with-mysqli --with-pdo-mysql \ --with-openssl --with-zlib --with-curl --with-gd \ --with-jpeg-dir --with-png-dir --with-freetype-dir \ --enable-mbstring --with-mcrypt --enable-hash && \ make -j 4 && make install && \ cp php.ini-production /usr/local/php/etc/php.ini && \ cp sapi/fpm/php-fpm.conf /usr/local/php/etc/php-fpm.conf && \ sed -i "90a \daemonize = no" /usr/local/php/etc/php-fpm.conf && \ mkdir /usr/local/php/log && \ cd / && rm -rf php* && \ ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime ENV PATH $PATH:/usr/local/php/sbin COPY php.ini /usr/local/php/etc/ COPY php-fpm.conf /usr/local/php/etc/ WORKDIR /usr/local/php EXPOSE 9000 CMD ["php-fpm"]