scripts: README: Add docker-install

bin/README.md

@@ -0,0 +1,10 @@
+# Scripts
+
+## External scripts
+
+### [docker-install](https://github.com/docker/docker-install)
+
+```sh
+curl -fsSL https://get.docker.com -o $HOME/bin/get-docker.sh
+sh get-docker.sh
+```