```
$ source .env            # not needed if your system has autoenv
$ build                  # fast: repeatable build
$ nix-build              # slow: reproducable nix build (for experts)
```

NOTES:

``` 

                   /admin.lua <--- define other instances..for CORS allow / mount http
                                   configure in-zip or filesystem-cache

                   opendirectory.lua <--- mount other instances over http (via xrforge or rclone)
scan files                                      
----------             middleware/xrexperience.lua
  | events:            ---------------------
  + file               type: sidecarfile 
  + sidecarfiles --->  regex =  {"\.glb", "\.png", "\.vtt"} 
  |                    regex_minmatch = 2
  + folder             viewer = /view/janusweb/#janus.url=${file}.glb
                       template = [[
                         <div class="tile"> ... </div>
                       ]]

```