Trouble running craft with docker I'm trying to set up craft to run with the docker images provided here. When I run docker-compose build, it gets through a few lines in the Dockerfile and then stops with an invalid reference error after these three lines:

ARG PHP_VERSION 
ARG PROJECT_TYPE 
FROM php:${PHP_VERSION}-${PROJECT_TYPE}-alpine

I do have php installed, but somehow the arguments aren't getting through to docker correctly. Has anyone gotten the docker images from that repo set up/integrated properly?
I'm no docker wizard so apologies if this is some really simple docker thing.
Ended up using the nitro tutorial instead. Thanks @Oli!