1. Set up a new repo (coder/terraform-provider-envbuilder) from https://github.com/hashicorp/terraform-provider-scaffolding-framework
   • Set up CI/testing
2. Implement the Terraform provider according to RFC
   • Create the public facing API (TF inputs/outputs)
   • Write documentation for using the provider
   • Implement "repo mode"
   • Implement "get cached image"
3. Publish the provider

(Pre-)Requirements:

• Implement "repo-mode" to use the repo as source of truth for devcontainer/Dockerfile envbuilder#218
• Refactor “get cached image” logic to a separate package in envbuilder #11

Part of Envbuilder Terraform Provider RFC.