Working raw mode and acme/v3

[Mrono]

I updated the versions of packages to bring it up to acme v3 and go 1.21 for increased provider support I added the code to make raw mode work. I changed from large if statements to case/switch, I can change it back if you hate it I updated Dockerfile and added docker-compose example with traefik (optional) I added dockerignore to speed up building I added a /health endpoint for returning basic app availability