Update README.md

README.md

@@ -35,11 +35,42 @@ cloud computing in own words and list examples for offerings, topologies and tec
 
 ![Exercise Tech Stack](/pics/2024-03-11-Blackboard.jpg)
 
+### Homework
+
+* Get a public GitHub, GitLab or Bitbucket account
+* Play around with GitHub codespaces and/or Gitpod
+
 # 2023-March-18 Session canceled
 
 # 2023-March-25 Cloud-based IDEs Intro & Docker/Container
 
-### Homework
+### Content 
+* Why do we need Containers?
+* Challenges for (polyglot) distributed systems in traditional IT:
 
-* Get a public GitHub, GitLab or Bitbucket account
-* Play around with GitHub codespaces and/or Gitpod
+ * Each environment has to be configured manually: Servers as well as local dev environments
+ * Configuration has to be as identical as possible: minor configuration drifts can lead to errors and the "it runs on my machine" problem
+ * Polyglot Server Environments are a huge challenge as for each programing language a separate configuration has to be managed on all systems.
+ * Changing Versions is tedious for local dev environment
+
+ ![image](https://github.com/maeddes/hse-24-summer/assets/22505258/63a76e4b-cd0e-4f9d-8e6e-cb7b364d4581)
+
+ * Whereas containerized Applications bring their own Environment and Configuration
+ * No need to preconfigure the local environment per programming language or application.
+ * Only the container engine is required to run all kinds of containers.
+
+ ![image](https://github.com/maeddes/hse-24-summer/assets/22505258/35dfe922-1c43-46db-a419-4c602dd084dc)
+
+ * How does the container engine work?
+ * Layer-based setup of containers
+ * Container vs Container Image
+ * How to create a container from application to dockerfile to image to running container
+
+ ![image](https://github.com/maeddes/hse-24-summer/assets/22505258/bcad4374-da59-429a-8272-1b42642c888c)
+
+### Student Questions:
+* Do I have to set up, build, and run the dockerfile for each container?
+* Can I run multiple applications inside a container?
+
+### Labs
+Exercises can be found [here](https://lecture.new.trainings.nvtc.io/basics/container/)