Docker 构建镜像实例-CFANZ编程社区

一、构建SSH镜像

1、创建镜像目录方便管理

mkdir /opt/sshd
cd /opt/sshd

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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 <jy>   

#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

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3、生成镜像

docker build -t sshd:centos .

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4、启动容器并修改root的PASSWD

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

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二、构建Systemctl镜像

1、创建镜像工作目录

mkdir /opt/systemctl
cd /opt/systemctl

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2、编写Dockerfile镜像文件

vim Dockerfile

FROM sshd:centos
MAINTAINER this is systemctl image <JY 2022-03-17>
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"]

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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。

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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

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5进入镜像查看状态.jpg

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

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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 < wl>

#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-http_stub_status_module && 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;"]

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3、编写脚本文件

vim run.sh  

#!/bin/bash
/usr/local/nginx/sbin/nginx

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4、生成镜像

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

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5、验证网页

http://192.168.100.136:xxxx

四、构建Tomcat镜像

1、创建镜像工作目录

mkdir /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 <clj>
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

http://192.168.100.136:1216

五、构建MySQL镜像

1、创建镜像目录方便管理

mkdir -p /opt/mysqld
cd /opt/mysqld

2、创建编写dockerfile文件

vim Dockerfile

FROM centos:7
MAINTAINER this is mysql image <clj>
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
#CMD ["/usr/sbin/init"]

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