What is the recommended workflow for shopify public app hosted on fly.io?
“fly launch” updates the URLs in app configuration to xxx.fly.dev
How to continue the development after the app is in production?
“shopify app dev” will overwrite URLs back to xxx.trycloudflare.com which will break the app
Most folks here can help you with Fly, but not necessarily with Shopify. In general, if you can get your app working in Docker, then it will work in Fly. So if there are Shopify upgrades to be had, or customisations to be made, do then at the Docker level, and then deploying your app can be done the standard Fly way.