Rework CI/CD pipeline

[ccheetham]

Current process looks like:

• local development in dev
  • tested using Docker per developer setup
• push to dev
  • trigger CI/CD, building docker image
  • push docker image to staging
• merge to main
  • trigger CI/CD, building docker image
  • push docker image to production

Downsides include different staging and production bits (images), thus no guarantee that what was tested in staging is what is running in production.

Proposal for new process:

• local development in dev
  • tested using Docker using docker-compose for repeatability
• push to dev
  • no CI/CD
• merge to main
  • trigger CI/CD, building docker image
  • push docker image to staging
    • push docker image to production