Docker 构建镜像实例

Docker 构建镜像实例

一、构建SSH镜像

1、创建镜像目录方便管理

mkdir /opt/sshd cd /opt/sshd

2、编写Dockerfile文件

vim Dockerfile #第一行必须指明基于的基础镜像 FROM centos:7 #作者信息 MAINTAINER this is ssh image #镜像的操作指令 RUN yum -y update RUN yum -y install openssh* net-tools lsof telnet passwd RUN echo 'abc1234' | passwd --stdin root #修改root的passwd RUN sed -i 's/UsePAM yes/UsePAM no/g' /etc/ssh/sshd_config #不使用PAM认证 RUN sed -ri '/^session\s+required\s+pam_loginuid.so/ s/^/#/' /etc/pam.d/sshd #取消pam限制 RUN ssh-keygen -t rsa -A #生成密钥认证文件 RUN mkdir -p /root /.ssh && chown root.root /root && chmod 700 /root/.ssh EXPOSE 22 CMD [ "/usr/sbin/sshd" , "-D"] #/usr/sbin/sshd -D用于前台启动sshd服务

3、生成镜像

docker build -t sshd:centos .

4、启动容器并修改root的PASSWD

docker run -d -P sshd:centos docker ps -a ssh localhost -p 49153

二、构建Systemctl镜像

1、创建镜像工作目录

mkdir /opt/systemctl cd /opt/systemctl

2、编写Dockerfile镜像文件

vim Dockerfile FROM sshd:centos MAINTAINER this is systemctl image ENV container docker #除了systemd-tmpfiles-setup.service，删除其它所有文件 RUN (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"]

3、生成镜像

docker build -t systemd:centos //启动容器，并挂载宿主机目录挂载到容器中，和进行初始化 docker run --privileged -d -p -v /sys/fs/cgroup:/sys/fs/cgroup:ro systemd:centos /sbin/init ##--privileged:使container内的root拥有真正的root权限。否则，container内的root只是外部的一个普通用户权限。

4、进入容器

docker ps -a docker exec -it a0d624d2bfa9 bash systemctl status sshd

方法二:

docker run --privileged -it -P -v/sys/fs/cgroup:/sys/fs/cgroup:ro systemd:centos /sbin/init B

三、构建NGINX镜像

1、创建镜像工作目录

mkdir /opt/nginx cd /opt/nginx/ cp /opt/nginx-1.12.0.tar.gz /opt/nginx

2、编写Dockerfile镜像文件

vim Dockerfile #基于基础镜像 FROM centos:7 #用户信息 MAINTAINER this is nginx image #添加环境包 RUN yum -y update RUN yum -y install pcre-devel zlib-devel gcc gcc-c++ make RUN useradd -M -s /sbin/nologin nginx #上传nginx软件压缩包，并解压 ADD nginx-1.12.0.tar.gz /opt/ #指定工作目录 WORKDIR /opt/nginx-1.12.0 RUN ./configure\ --prefix=/usr/local/nginx \ --user=nginx \ --group=nginx \ --with-&& make && make install ENV PATH /usr/local/nginx/sbin:$PATH #指定http和https端口 EXPOSE 80 EXPOSE 443 RUN echo "daemon off;" >> /usr/local/nginx/conf/nginx.conf #关闭nginx在后台运行 #添加宿主机中run.sh到容器中 ADD run.sh /run.sh RUN chmod 755 / run.shCMD [ "/run.sh" ] CMD [ " /usr/ local/ sbin/ nginx","-g", "daemon off;"]

3、编写脚本文件

vim run.sh #!/bin/bash /usr/local/nginx/sbin/nginx

4、生成镜像

//创建新镜像 docker build -t nginx:centos . docker run -d -P nginx:centos docker ps -a

5、验证网页

/opt/tomcat cd /opt/tomcat cp /opt/jdk-8u91-linux-x64.tar.gz /opt/tomcat cp /opt/apache-tomcat-8.5.16.tar.gz /opt/tomcat

2、 创建编写dockerfile文件

vim Dockerfile FROM centos:7 MAINTAINER this is tomcat image ADD jdk-8u91-linux-x64.tar.gz /usr/local/ WORKDIR /usr/local/ RUN mv jdk1.8.0_91 /usr/local/java ENV JAVA_HOME /usr/local/java ENV JRE_HOME ${JAVA_HOME}/jre ENV CLASSPATH .:${JAVA_HOME}/lib:${JRE_HOME}/lib ENV PATH $JAVA_HOME/bin:$PATH ADD apache-tomcat-8.5.16.tar.gz /usr/local/ WORKDIR /usr/local/ RUN mv apache-tomcat-8.5.16 /usr/local/tomcat EXPOSE 8080 #CMD ["/usr/local/tomcat/bin/catalina.sh","run"] ENTRYPOINT ["/usr/local/tomcat/bin/catalina.sh","run"]

3、 生成镜像

docker build -t tomcat:centos . docker run -d --name tomcat01 -p 1216:8080 tomcat:centos

4、浏览器访问测试

-p /opt/mysqld cd /opt/mysqld

2、创建编写dockerfile文件

vim Dockerfile FROM centos:7 MAINTAINER this is mysql image RUN yum -y install gcc gcc-c++ ncurses ncurses-devel bison cmake make RUN useradd -M -s /sbin/nologin mysql ADD mysql-boost-5.7.20.tar.gz /usr/local/src/ WORKDIR /usr/local/src/mysql-5.7.20/ RUN cmake \ -DCMAKE_INSTALL_PREFIX=/usr/local/mysql \ -DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.sock \ -DSYSCONFDIR=/etc \ -DSYSTEMD_PID_DIR=/usr/local/mysql \ -DDEFAULT_CHARSET=utf8 \ -DDEFAULT_COLLATION=utf8_general_ci \ -DWITH_INNOBASE_STORAGE_ENGINE=1 \ -DWITH_ARCHIVE_STORAGE_ENGINE=1 \ -DWITH_BLACKHOLE_STORAGE_ENGINE=1 \ -DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \ -DMYSQL_DATADIR=/usr/local/mysql/data \ -DWITH_BOOST=boost \ -DWITH_SYSTEMD=1 && make && make install RUN chown -R mysql:mysql /usr/local/mysql/ RUN rm -rf /etc/my.cnf ADD my.cnf /etc/ RUN chown mysql:mysql /etc/my.cnf ENV PATH=/usr/local/mysql/bin:/usr/local/mysql/lib:$PATH WORKDIR /usr/local/mysql/ RUN bin/mysqld \ --initialize-insecure \ --user=mysql \ --basedir=/usr/local/mysql \ --datadir=/usr/local/mysql/data RUN cp /usr/local/mysql/usr/lib/systemd/system/mysqld.service /usr/lib/systemd/system/ EXPOSE 3306 ADD run.sh /usr/local/src RUN chmod 755 /usr/local/src/run.sh RUN sh /usr/local/src/run.sh

3、编写 my.cnf 脚本

vim my.cnf [client] port = 3306 default-character-set=utf8 socket = /usr/local/mysql/mysql.sock [mysql] port = 3306 default-character-set=utf8 socket = /usr/local/mysql/mysql.sock [mysqld] user = mysql basedir = /usr/local/mysql datadir = /usr/local/mysql/data port = 3306 character_set_server=utf8 pid-file = /usr/local/mysql/mysqld.pid socket = /usr/local/mysql/mysql.sock server-id = 1 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,PIPES_AS_CONCAT,ANSI_QUOTES

4、编写 run.sh 脚本

vim run.sh #!/bin/bash /usr/local/mysql/bin/mysqld systemctl enable mysqld

5、创建新镜像、启动容器，并进行初始化

docker build -t mysql:centos . #启动容器，并进行初始化 docker run --name=mysql_server -d -P --privileged mysql:centos /usr/sbin/init &

6、查看镜像

docker ps -a

7、进入容器，授权远程连接 mysql

docker exec -it f9a4d8f6c65f /bin/bash mysql -u root -p grant all privileges on *.* to 'root'@'%' identified by 'abc123'; grant all privileges on *.* to 'root'@'localhost' identified by 'abc123'; flush privileges;

8、在客户端连接mysql容器

mysql -h 192.168.100.136 -u root -P 49153 -pabc123

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