📝 Remove GitPod and add link to GitHub codespaces

Fixes #2678

Signed-off-by: homersimpsons <[email protected]>

README.md

@@ -139,9 +139,7 @@ The User and Developer Documentation for youki is hosted at [https://containers.
 # Getting Started
 
 Local build is only supported on Linux.
-For other platforms, please use the [Vagrantfile](#setting-up-vagrant) that we have prepared. You can also spin up a fully preconfigured development environment in the cloud with gitpod.
-
-[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/containers/youki)
+For other platforms, please use the [Vagrantfile](#setting-up-vagrant) that we have prepared. You can also spin up a fully preconfigured development environment in the cloud with [GitHub Codespaces](https://docs.github.com/en/codespaces/getting-started/quickstart).
 
 ## Requires