docker on linuxlite and ed/x/ubuntu

# aptitude update
# aptitude install apt-transport-https \
 ca-certificates \
 curl \
 software-properties-common

# curl -fsSL https://download.docker.com/linux/ubuntu/gpg \
| apt-key add -

# apt-key fingerprint 0EBFCD88

# add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"

then finally 

# aptitude update
# aptitude install docker-ce