方法一:.从github上下载docker-compose二进制文件安装
sudo curl -L https://github.com/docker/compose/releases/download/v2.6.1/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
注意: 版本号前要加 v
方法二:若是github访问太慢,可以用daocloud下载,下载文件到 /usr/local/bin/docker-compose 文件夹下:
sudo curl -L https://get.daocloud.io/docker/compose/releases/download/v2.6.1/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose

docker-compose --version

参考