Highlighting breaking change/prerequisite (home-assistant#18426)

DubhAd · web-flow · commit 0ebd9a51450e · 2021-07-08T09:21:26.000+02:00
Based off the breaking change in 2021.7 (home-assistant/core#51628), highlighting the requirements here
diff --git a/source/_includes/installation/container.md b/source/_includes/installation/container.md
@@ -7,6 +7,8 @@ These below instructions are for an installation of Home Assistant Container run
 <b>Prerequisites</b>
 
 This guide assumes that you already have an operating system setup and a container runtime installed (like Docker).
+  
+If you are using Docker then you need to be on at least version 19.03.9, ideally an even higher version, and `libseccomp` 2.42 or newer.
 </div>
 
 ### Platform Installation
