found the hint here:
When I ran:
journalctl --no-pager -u resin-supervisor
I found the following recurring error, which has told me that the IP address in docker-compose under service.ports was incorrect:
Mar 22 14:49:57 5aa8eda resin-supervisor[1330]: [error] Device state apply error Error: Failed to apply state transition steps. (HTTP code 500) server error - driver failed programming external connectivity on endpoint nsd_2085783_1308655 (72b0172b432d565d188842d323260ce857121ddbd2286a2baa1317c4219f05e3): Error starting userland proxy: listen tcp 192.168.2.141:53: bind: cannot assign requested address Steps:["start"]
Leaving this here just for a reference… Hope it will help someone.