If you want to locally build the docker image, you can run the following command:
docker build -t discord-auth-proxy:latest -f DiscordAuthProxy/Dockerfile .
To the run the image locally using your development settings, you can run:
docker run --rm -it -p 7160:8080 -v $(pwd)/DiscordAuthProxy/appsettings.Development.json:/app/appsettings.json:ro discord-auth-proxy:latest