Add mosquitto/docker-compose.yml

Tested as a custom template

mosquitto/docker-compose.yml

@@ -0,0 +1,13 @@
+services:
+  # mqtt5 eclipse-mosquitto
+  mqtt5:
+    image: eclipse-mosquitto
+    container_name: mqtt5
+    ports:
+      - "1883:1883" #default mqtt port
+      - "9002:9001" #default mqtt port for websockets (9001 used by portainer_agent)
+    volumes:
+      - /docker/mqtt/config:/mosquitto/config:rw
+      - /docker/mqtt/data:/mosquitto/data:rw
+      - /docker/mqtt/log:/mosquitto/log:rw
+    restart: unless-stopped