In this video, we build and launch Containerlab inside GitHub Codespaces, creating a fully working Arista cEOS lab environment. You will learn how to: • Run the post-create script to start Containerlab • Verify that the cEOS image loads correctly and Docker containers launch • Explore and understand the Containerlab topology YAML file • Connect to Arista cEOS switches through SSH from inside Codespaces Once complete, your Arista lab will be online and ready for testing and learning. 💡 Next up: Learn how to reconnect to your lab after closing Codespaces and save your Arista configurations. #Arista #cEOS #Containerlab #Toddomation #GitHub #NetworkAutomation #Codespaces