diff --git a/Days/day42.md b/Days/day42.md
index caded9c..ef0ebc4 100644
--- a/Days/day42.md
+++ b/Days/day42.md
@@ -132,5 +132,6 @@ A container image is a lightweight, standalone, executable package of software t
 - [TechWorld with Nana - Docker Tutorial for Beginners](https://www.youtube.com/watch?v=3c-iBn73dDE)
 - [Programming with Mosh - Docker Tutorial for Beginners](https://www.youtube.com/watch?v=pTFZFxd4hOI)
 - [Docker Tutorial for Beginners - What is Docker? Introduction to Containers](https://www.youtube.com/watch?v=17Bl31rlnRM&list=WL&index=128&t=61s)
+- [Introduction to Container By Red Hat](https://www.redhat.com/en/topics/containers)
 
 See you on [Day 43](day43.md)