Amazon’s free t4g.small trial is a cheap way to get into setting up your own Mastodon instance https://aws.amazon.com/ec2/faqs/#t4g-instances
Amazon EC2 FAQs – AWS

Find answers to some of the common questions about Amazon EC2.

Amazon Web Services, Inc.
@ds Interesting. Does #Mastodon work well for you on #ARM? I'm on #Scaleway and mostly memory-bound, maybe I'll try #AMP2 instances if I ever need 8 GB of RAM.
https://www.scaleway.com/en/amp2-instances/
AMP2 Instances | Scaleway

Powerful 64-bit ARM virtual machines, based on Ampere's latest processor designed for the cloud: the Altra Max.

Scaleway

@nemobis I’m the only user on my instance but so far it’s been great! I run everything in Docker Compose on a single t4g.small.

PS - thanks for the heads up about the CVEs!