container/mqtt/sec/docker-compose.yml

services:
  mosquitto:
    image: eclipse-mosquitto:2
    restart: unless-stopped

    environment:
      TZ: ${TZ:-Europe/Berlin}
      MQTT_HOSTNAME: ${MQTT_HOSTNAME:-mqtt.local}
      MQTT_USER: ${MQTT_USER:-mqttuser}
      MQTT_TLS_PORT: ${MQTT_TLS_PORT:-8883}

    volumes:
      - ${CONFIG_PATH:-./config}:/mosquitto/config
      - ${DATA_PATH:-./data}:/mosquitto/data
      - ${LOG_PATH:-./log}:/mosquitto/log
      - /etc/ssl/certs:/etc/ssl/certs:ro
      - ${TLS_PATH:-./tls}:/mosquitto/tls

    ports:
      - "${MQTT_TLS_PORT:-8883}:8883"

    dns:
      - ${DNS_SERVER}