视频教程：
安装 docker
curl -fsSL https://get.docker.com | sh
安装 docker-compose
curl -L "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
给docker-compose赋予运行权限
chmod +x /usr/local/bin/docker-compose
键入命令docker-compose up -d 后出现以下提示
是否愿意帮忙解答一下，谢谢
[+] Building 0.0s (0/0) docker:default
[+] Running 2/2
✔ Network root_default Created 0.1s
✔ Container root-app-1 Created 1.2s
Error response from daemon: driver failed programming external connectivity on endpoint root-app-1 (1188e55a6ebcdad4fcd24e9036a5403a983b011eafddffc85f5df35e7594ae3b): Error starting userland proxy: listen tcp4 0.0.0.0:80: bind: address already in use
root@vmi1500356:~# docker-compose up -d
[+] Building 0.0s (0/0) docker:default
[+] Running 0/1
⠹ Container root-app-1 Starting 0.2s
Error response from daemon: driver failed programming external connectivity on endpoint root-app-1 (1ac2c4faa2fbe23068109813e170082333d10f369294ee8112b689bf5ecefcdf): Error starting userland proxy: listen tcp4 0.0.0.0:80: bind: address already in use
root@vmi1500356:~# docker-compose up -d
[+] Building 0.0s (0/0) docker:default
[+] Running 0/1
⠙ Container root-app-1 Starting 0.1s
Error response from daemon: driver failed programming external connectivity on endpoint root-app-1 (8b42b9b58cb617148fe2fcb10f2672e76c93a8eea0ea3c3cf83bb904a982a5c6): Error starting userland proxy: listen tcp4 0.0.0.0:80: bind: address already in use
root@vmi1500356:~#
你好，这是因为80端口被占用了。
输入命令 ” sudo lsof -i :80 ”
就能看到是什么进程在占用80端口，
如果要释放的话，使用命令 ” sudo kill -9 [进程ID/PID] ” 即可终止对应进程。