Image builds are failing

[0x2b3bfa0]

Error modify AMI attributes: ResourceLimitExceeded: You have reached your quota of 5 for the number of public images allowed in this Region. Deregister unused public images or make them private, or request an increase in your public AMIs quota.

Also, we should update the documentation accordingly if we want to stick with date-versioned images.

### Tasks
- [x] Increase Quota for public images
- [ ] Change name of the image to `dvc-studio-selfhosted`
- [ ] Improve the documentation