linux系统Docker容器Dockerfile示例

Dockerfile示例

• • • 可以使用systemctl命令的镜像
    • • Dockerfile
    • 基于centos7创建mysql镜像
    • • Dockerfile
      • mysql.sh

可以使用systemctl命令的镜像

Dockerfile

vim Dockerfile

FROM centos:7
ENV container docker

RUN yum -y swap -- remove fakesystemd -- install systemd systemd-libs
RUN yum -y update; yum clean all; \
(cd /lib/systemd/system/sysinit.target.wants/; for i in *; do [ $i == systemd-tmpfiles-setup.service ] || rm -f $i; done); \
rm -f /lib/systemd/system/multi-user.target.wants/*;\
rm -f /etc/systemd/system/*.wants/*;\
rm -f /lib/systemd/system/local-fs.target.wants/*; \
rm -f /lib/systemd/system/sockets.target.wants/*udev*; \
rm -f /lib/systemd/system/sockets.target.wants/*initctl*; \
rm -f /lib/systemd/system/basic.target.wants/*;\
rm -f /lib/systemd/system/anaconda.target.wants/*;

VOLUME [ "/sys/fs/cgroup" ]

CMD ["/usr/sbin/init"]

基于centos7创建mysql镜像

Dockerfile

FROM centos:7

RUN yum install -y https://dev.mysql.com/get/mysql80-community-release-el7-7.noarch.rpm && \
    yum -y install  yum-utils && \
	yum-config-manager --disable mysql80-community   && \
    yum-config-manager --enable mysql57-community && \
	yum -y groupinstall "Development Tools"  && \
    yum -y install mysql-community-server  
	
ADD ./mysql.sh /
CMD [ "sh","/mysql.sh" ]

mysql.sh

mysqld --initialize   #mysql初始化命令
pass=$(grep -o 'root@localhost.*' /var/log/mysqld.log | awk 'END{print $NF}')
mysqld --user=root &    #root用户启动mysql
sleep 10
mysqladmin -p"${pass}" password "${MYSQL_ROOT_PASSWORD}"
tail -f /var/log/mysqld.log