Add descriptions for Linux
@@ -17,3 +17,15 @@ docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is t
See
[this article](https://medium.com/@yutafujii_59175/a-complete-one-by-one-guide-to-install-docker-on-your-mac-os-using-homebrew-e818eb4cfc3).
+
+## Ubuntu
+
+Follow [these instructions](https://docs.docker.com/engine/install/ubuntu/).
+
+## Fedora
+
+Follow [these instructions](https://docs.docker.com/engine/install/fedora/).
+
+Consider
+[Post-installation steps for Linux](https://docs.docker.com/engine/install/linux-postinstall/)
+to run docker without `sudo`.
