Merge pull request #6851 from lenestopage/patch-8

Update install.md

compose/install.md

@@ -128,6 +128,15 @@ by step instructions are also included below.
     ```bash
     sudo chmod +x /usr/local/bin/docker-compose
     ```
+    
+> ***Note:*** If the command `docker-compose` fails after installation, check your path.
+> You can also create a symbolic link to `/usr/bin` or any other directory in your path.
+
+For example:
+
+```bash
+sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
+```
 
 3.  Optionally, install [command completion](completion.md) for the
     `bash` and `zsh` shell.