goserv/examples/Caddyfile

# redirect www to bare domain
www.example.com {
    redir https://example.com{uri} permanent
}

example.com {
    # log to stdout, which is captured by journalctl
    log {
        output stdout
        format console
    }

    # turn on standard streaming compression
    encode gzip zstd

    # reverse proxy /api to :3000
    reverse_proxy /api/* localhost:3000
    reverse_proxy /.well-known/openid-configuration localhost:3000
    reverse_proxy /.well-known/jwks.json localhost:3000

    # serve static files from public folder, but not /api
    @notApi {
        file {
            try_files {path} {path}/ {path}/index.html
        }
        not path /api/*
        not path /.well-known/openid-configuration
        not path /.well-known/jwks.json
    }
    route {
      rewrite @notApi {http.matchers.file.relative}
    }
    root * /srv/example.com/public/
    file_server
}