Command ‘docker‘ not found, but can be installed with:

docker pull local0state/trojanzoo
           

在運作上面的指令報錯

Command 'docker' not found, but can be installed with:

sudo snap install docker     # version 19.03.13, or
sudo apt  install docker.io  # version 20.10.2-0ubuntu1~20.04.2
           

故按照提示

sudo snap install docker
           

docker 19.03.13 from Canonical✓ installed
           

安裝完docker 之後就可以使用docker相應的指令啦