[refactor] [cli] Add Dockerfile for new main
[refactor] [cli] Add Dockerfile for new main

mgranberry/ttn,jvanmalder/ttn,jvanmalder/ttn,mgranberry/ttn,TheThingsNetwork/ttn,jvanmalder/ttn,LoRaWanSoFa/ttn,TheThingsNetwork/ttn,LoRaWanSoFa/ttn,TheThingsNetwork/ttn,mgranberry/ttn