Update ubuntulinux.md

Fixed code block that wasn't formatted properly
This commit is contained in:
Victoria Bialas
2016-12-02 12:18:07 -08:00
committed by GitHub
parent 43c4656ae6
commit 3b1624abd0

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@@ -232,6 +232,7 @@ systems carefully.
To install a specific version of `docker-engine`:
1. List all available versions using `apt-cache madison`:
```bash
$ apt-cache madison docker-engine