How to create sandbox after forking from a GitHub repository?

[lulunac27a]

I want to create a sandbox from forking from my GitHub repository, but I don't see the Fork button in the project editor view.

[JamesACS]

Hello @lulunac27a

Are you importing the repository via the CodeSandbox dashboard after linking your Github account?

[lulunac27a]

Yes

[fchampreux]

Hi @lulunac27a,
From my experience - tell me if I am right @JamesACS - your repository should contain a .codesandbox folder with container description in order to allow its creation.
What I did is create a Codesandbox instance from the matching provided template, export it to GitHub, and then locally copy ma application code in there. Pushed to GitHub, and the use this new repository to create a new Codesandobx instance thanks to the import function.
Note that I also had to work on the .devcontainer files to finish up configuration. Here is my example: Rails8Base