ECONNREFUSED to artifact service on WSL2 with mirrored networking

[matt-carr]

Been trying to use act (0.2.71) to test my workflow but I can't nail the communication between the act container and the artifact service container. I've tried default settings, plus a bunch of the suggestions in #329

I have networkingMode=mirrored set in my .wslconfig for compatibility with Cisco AnyConnect VPN, although it doesn't change at all if I'm on the vpn vs not. I'm able to curl the artifact service while act is running, both from within a WSL terminal and within a run step