Validators should be one-click runnable on a PaaS

[nambrot]

Validators should be even easier to run than they are today https://docs.hyperlane.xyz/docs/operate/validators/run-validators

There are two paths:

1. Because current checkpoint syncers require a major cloud provider like AWS or GCP, use services like https://aws.amazon.com/cloudformation/resources/templates/ or https://cloud.google.com/deployment-manager/docs to create one-click experiences on them

2. Once a cloud-provider independent checkpoint syncer like Validator should be able to be configured submit checkpoints on-chain #4586 is implemented, general docker-based PaaS can be supported like (since it boils down to a single docker image with no service dependencies)

• https://railway.app/
• https://render.com/
• https://devcenter.heroku.com/articles/build-docker-images-heroku-yml
• https://fly.io/docs/languages-and-frameworks/dockerfile/