Mainsail on Caddy Web Server

Caddyfile

# DO NOT EXPOSE YOUR PRINTER ON THE INTERNET!
# This is inteded to be used with a local domain and a private ACME server like
# step-ca, or with self-signed certificates.

# Tweak your domain and the root folder for mainsail accordingly. 
# This path will work out of the box with https://aur.archlinux.org/packages/mainsail-git
# You might also want to enable HSTS, if you know what you're doing.

{
    admin off
    email <your_email>
    acme_ca https://<your_step_ca>/<acme_prover>/acme/directory
}

(hsts) {
    header Strict-Transport-Security max-age=31536000;
}

myprinter.home.arpa {
    vars {
        moonraker_host "127.0.0.1"
        moonraker_port 7125
    }

    @proxy path /websocket /printer/* /api/* /access/* /machine/* /server/*
    handle @proxy {
        reverse_proxy {vars.moonraker_host}:{vars.moonraker_port}
        #import hsts
    }

    handle {
        file_server
        root /usr/share/webapps/mainsail
        try_files {path} /index.html
        header Cache-Control "no-store, no-cache, must-revalidate"
        #import hsts
    }
}