TLS certificates for Mosquitto port 8883 (and WSS 9002)

Not required for first install — starter mosquitto.conf uses plain port 1883 only.

Place these files here before using TLS-only or "Both" connection permission in Receive:
  ca.crt
  server.crt
  server.key

Generate on the office PC (from ackfield-receive repo), for example:
  powershell -File scripts/regenerate-mqtt-certs.ps1

Then restart Mosquitto:
  docker restart mosquitto

Phones (Ackfield-Send) need ca.crt bundled in the app for mqtts connections.
