gitpod-io/gitpod ? reverse-engineered prompt

I want to build a platform for developers, something like Gitpod, to create on-demand cloud development environments. The main goal is to let engineers start coding on any project instantly, without complicated local machine setup. It should integrate with code hosting platforms like GitHub and GitLab, maybe by adding a special 'Start Coding' button to project pages.

When someone clicks it, the platform should spin up a fresh, secure, and pre-configured workspace that opens right in their web browser. This environment should feel like a complete IDE, essentially like running VS Code in a browser tab, complete with a terminal. The key feature is that project owners can define the entire environment—all the tools, dependencies, and startup tasks—in a simple configuration file within their repository. This guarantees every developer gets an identical and reproducible workspace, making onboarding and code reviews much faster.