README.md

This is an advanced example for managing CI/CD across multiple Prefect workspaces.

The GitHub Actions workflows in this repo:

• create mirrored deployments across staging and prod workspaces
  • which workspace flows are deployed to is determined by the branch that changes happen on: stg for staging, main for prod
• build and push docker images that do not contain flow code, and are tagged like :<commit-hash>-<environment> to tie the code version and branch/env to image versions
• cache both docker image layers and pip dependencies for ultra fast rebuilds
• push code to S3 (via the push step of each prefect.yaml), where:
  • each environment gets its own bucket
  • each project gets its own folder in that bucket

This example demonstrates a monorepo approach with multiple projects, each project having:

• a prefect.yaml
• a Dockerfile
• a requirements.txt
• its own flow(s)
• its own independently triggered GitHub Actions workflow

The configuration relies heavily on templating to make copy/pasting files when starting new projects or adding deployments easier.