Caddyfile.json

{
  "admin": {
    "disabled": true
  },
  "apps": {
    "http": {
      "http_port": 8080,
      "https_port": 8443,
      "servers": {
        "example.com": {
          "listen": [":8080"],

          "automatic_https": {
            "disable": true
          },

          "routes": [
            {
              "match": [
                {
                  "host": ["netbox.example.com"]
                }
              ],
              "handle": [
                {
                  "handler": "subroute",
                  "routes": [
                    {
                      "match": [
                        {
                          "path": ["/static"]
                        }
                      ],
                      "handle": [
                        {
                          "handler": "file_server",
                          "root": "/var/www/netbox"
                        }
                      ]
                    },
                    {
                      "handle": [
                        {
                          "handler": "reverse_proxy",
                          "upstreams": [
                            {
                              "dial": "netboxapp:8001"
                            }
                          ]
                        }
                      ]
                    }
                  ]
                }
              ]
            }
          ]
        }
      }
    },
    "tls": {}
  }
}