docker official image download and create image using Dockerfile

1, landing docker hut's official website: https: / / hub docker. com /

2, search centos

3. docker pull centos:7.2.1511

4. Create Dockerfile file:

[root@vmhost centos7.2]# cat Dockerfile
[plain] view plain copy 
FROM centos:7.2.1511 
MAINTAINER wanghongwei(wanghongwei@4paradigm.com) 
RUN yum install -y expect \ 
    && yum install -y openssh-clients openssh-server sudo rsync vim libaio strace wget telnet lsof lvm2 psmisc net-tools \ 
      && /usr/bin/ssh-keygen -A \ 
       && yum clean all  
RUN useradd work 
RUN echo 123456 | passwd --stdin root 
RUN echo work123 | passwd --stdin work 
ADD jdk-8u121-linux-x64.tar.gz /home/work 
#ENTRYPOINT ["/root/docker/images/centos7.2"] 

5, docker image: Dockerfile file is used in the current path

docker build -t 4paradigm/centos:7.2 .

6. Start the container script:

[root@vmhost prophet2.0]# cat prophet-3.sh
[plain] view plain copy 
#!/bin/bash -xv 
HOST_NAME=prophet-3 
HOST_IP=172.27.4.5 
GATEWAY=172.27.0.1 
ISO_PATH=/root/iso 
VOLUME_PATH=/home/whwstar/volume/prophet3 
image=4paradigm/centos:7.2 
if [ `docker ps -a | grep $HOST_NAME | wc -l` -eq 0 ];then 
  mkdir -p $VOLUME_PATH 
  docker run -itd -h $HOST_NAME --name=$HOST_NAME --net=none -v $ISO_PATH:$ISO_PATH -v $VOLUME_PATH:/home/work $image /bin/bash 
  pipework br0 $HOST_NAME $HOST_IP/20@$GATEWAY 
  docker exec -d $HOST_NAME /usr/sbin/sshd -D 
elif [ `docker ps -a | grep prophet-01 | wc -l` -eq 1 ];then 
  docker start $HOST_NAME 
  pipework br0 $HOST_NAME $HOST_IP/20@$GATEWAY 
  docker exec -d $HOST_NAME /usr/sbin/sshd -D 
else 
  echo "docker start exception" 
fi