I want to install chirpstack onto two dragino lorawan gateways

We are implementing a LoRaWan network in the US using Dragino LPS8 Gateways and want to install Chirpstack on them in place of the bridge already installed. I have not been able to find anything in the web that shows me how to do this. Can anyone pointme in the right direction please?

Are you talking about the ChirpStack network server or the Gateway Bridge? The latter is not supported on the LPS8 (cloud only), but the MQTT Forwarder is:

https://www.chirpstack.io/docs/chirpstack-mqtt-forwarder/install/dragino.html

If you have 2 or more gateways, it is advisable to put ChirpStack on a VPS/Cloud.
Or just use LoRaWAN Cloud from providers.