To add a custom domain you need to do a pull request on this repository:
Follow the Snapshot spaces directory tree
Set it in the Domain name field
To add a custom domain, fill in the Domain name field in your settings.
Insert it in the domains.json file list
To add your subdomain to Snapshot, you need to edit the domains.json file below.
To prevent conflicts, it is recommended to add your subdomain between two existing domains rather than at the end or beginning of the list, as in the example below.
You will need to add this as CNAME in your domain DNS
After committing your PR, you will have to wait for the merge and the deployment of your PR to be able to get your domain live. This process can take a few hours.