chore: add resource under docker:introduction:need-for-containers

src/data/roadmaps/docker/content/100-introduction/101-need-for-containers.md

@@ -16,4 +16,6 @@ How Containers Address These Challenges is as follows:
 
 - **Faster processes and scalability:** Containers can be easily created, destroyed, and replaced, leading to faster development and deployment cycles. Scaling applications becomes easier as multiple containers can be deployed without consuming significant resources.
 
-Overall, containers have become an essential tool for organizations that want to respond quickly to market changes, improve resource efficiency, and ensure reliable and consistent software delivery. They have revolutionized modern software development practices and have long-lasting impact in the world of deployment and application management.
+Overall, containers have become an essential tool for organizations that want to respond quickly to market changes, improve resource efficiency, and ensure reliable and consistent software delivery. They have revolutionized modern software development practices and have long-lasting impact in the world of deployment and application management.
+
+- [Introduction to containers - AWS Skill Builder](https://explore.skillbuilder.aws/learn/course/106/introduction-to-containers)