title: Docker installation on Linux Mint 19.2 doesn't work
body: <p>Just got a fresh Linux mint 19.2 installed, i needed docker so i went to the docker doc and followed the process.</p>
  
  <p><a href="https://docs.docker.com/install/linux/docker-ce/ubuntu/" rel="noreferrer">https://docs.docker.com/install/linux/docker-ce/ubuntu/</a></p>
  
  <p>everything went well until step 4 of the repository set up.</p>
  
  <p>on the 4 step it says "Malformed input, repository not added."</p>
  
  <p>I've changed "$(lsb_release -cs)" to "tina" and "tara" still doesn't work.</p>
  
  <p>the 4th step to set up the repository:</p>
  
  <p>sudo add-apt-repository "deb [arch=amd64] <a href="https://download.docker.com/linux/ubuntu" rel="noreferrer">https://download.docker.com/linux/ubuntu</a> $(lsb_release -cs) stable"</p>