Caddyfile

https://mathcord.chubakbidpaa.com {
  reverse_proxy  mathcordapi:8050 {
          header_up Host {upstream_hostport}
          header_up X-Forwarded-Host {host}
          header_down Cache-Control "max-age=3600"
          header_down Access-Control-Allow-Origin "*"
          header_down Access-Control-Allow-Methods "*"
          header_down Access-Control-Allow-Headers "access-control-allow-origin"
    }

}

https://mathcord.willsh3b33.xyz {
  reverse_proxy  mathcordapi:8050 {
          header_up Host {upstream_hostport}
          header_up X-Forwarded-Host {host}
          header_down Cache-Control "max-age=3600"
          header_down Access-Control-Allow-Origin "*"
          header_down Access-Control-Allow-Methods "*"
          header_down Access-Control-Allow-Headers "access-control-allow-origin"
    }

}