将需要的包直接放到工作目录下
/root/docker
node2 root@node2:~/docker/nginx# pwd
/root/docker/nginx
node2 root@node2:~/docker/nginx# ls
Dockerfile nginx-1.14.1.tar.gz nginx.conf
注意：Dockerfile文件中不好包含空行，可能会warning
当然也可以在线wget需要的软件包
[WARNING]: Empty continuation lines will become errors in a future release
node2 root@node2:~# docker build -t centos:nginx /root/docker/nginx/
ping -f -c 100 www.baidu.com PING www.a.shifen.com (14.215.177.38) 56(84) bytes of data.
--- www.a.shifen.com ping statistics --- 100 packets transmitted, 100 received, 0% packet loss, time 1446ms rtt min/avg/max/mdev = 40.929/65.116/187.912/37.185 ms, pipe 13, ipg/ewma 14.606/42.619 ms
docker build -t ubuntu:tools /root/tool/ node1 root@node1:~# docker images REPOSITORY TAG IMAGE ID CREATED SIZE ubuntu tools fed5c746dbc8 44 seconds ago 529MB
about： -i, --interactive Keep STDIN open even if not attached -t, --tty Allocate a pseudo-TTY -d, --detach Run container in background and print container ID -p, --publish list Publish a container's port(s) to the host --name string Assign a name to the container
f4164c5f309e613cb88cc0b1288480b24513de3a466704eecfee2384f07674fa
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES f4164c5f309e ubuntu:tools "bash" 54 seconds ago Up 54 seconds 0.0.0.0:8443->8443/tcp toolstest
node1 root@node1:# docker exec -it f4164c5f309e /bin/bash
node1 root@node1:# docker exec -it f4164c5f309e /bin/bash
root@f4164c5f309e:/# uname -a
Linux f4164c5f309e 3.10.0-1127.el7.x86_64 #1 SMP Tue Mar 31 23:36:51 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
root@f4164c5f309e:/# cat /etc/issue
Ubuntu 20.04.3 LTS \n \l