The software you linked to is provided as an entire image. You simply download it, flash it to an SD card (use Etcher, it’s excellent!), stick the SD card in the Pi and boot it. You don’t need Resin at all.
If you wanted to use Resin then it’s a totally different ball game. You’d need build the above into a docker image and then use Resin to run that image. I’d suggest just running as is though, unless you need Resin for something?
What sort of access do you need? SSH? HTTP? For simple remote access there are loads of other solutions. Personally I use DDnS and a VPN but if security is less of a concern just use port forwarding.
In terms of building it into a docker image that’s waaay outside of my knowledge and skill set I’m afraid. Maybe it’s simpler than I think and someone else can shed some light?