test: mount mosquitto.conf to listen on all interfaces

test/docker-compose.yml

@@ -26,6 +26,7 @@ services:
     volumes:
       - mosquitto_data:/mosquitto/data
       - mosquitto_log:/mosquitto/log
+      - ./mosquitto.conf:/mosquitto/config/mosquitto.conf:ro
     healthcheck:
       test: ["CMD", "sh", "-c", "nc -z localhost 1883 || exit 1"]
       interval: 2s

test/mosquitto.conf

@@ -0,0 +1,6 @@
+# Allow external connections on port 1883
+listener 1883 0.0.0.0
+allow_anonymous true
+# Increase persistence location so container can map volume if needed
+persistence true
+persistence_location /mosquitto/data/