mqtt-client.yml

# docker-compose -f mqtt-client.yml -p mqtt-client up -d
version: '2.4'
services:
  
  # MQTT-Client CLI based on mosquitto-clients 
  # (OS: AlpineLinux ; Installed: "apk add --no-cache ca-certificates mosquitto-clients")
  # https://github.com/Tob1as/docker-tools
  # https://hub.docker.com/r/tobi312/tools
  # Supported architectures: arm32v6, arm32v7, arm64v8, amd64
  # https://mosquitto.org/man/mosquitto_sub-1.html - read for more information about mosquitto_sub-command
  # after start see logs: "docker logs -f mqtt-client"
  mqtt-client:
    image: tobi312/tools:mqtt-client
    container_name: mqtt-client
    restart: unless-stopped
    #user: "1000:1000"  # format: "${UID}:${GID}"
    #volumes:
    #  - /etc/ssl/certs/ca-certificates.crt:/etc/ssl/certs/ca-certificates.crt:ro
    environment:
      MQTT_HOSTNAME: "mqtt.example.com"
      MQTT_PORT: "8883"               # 1883 for TCP without SSL or 8883 for TCP with SSL
      MQTT_USERNAME: "user"
      MQTT_PASSWORD: "passw0rd"
      MQTT_TOPICS: '-t #'             # example: '-t #' for all topics or '-t topic1/# -t topic2/# -t topic3/#' for specific topic
      MQTT_CLIENTNAME: "mqtt-client-0815"
    entrypoint: [ "/bin/sh", "-c", "--" ]
    #command: [ "while true; do sleep 60; done;" ]  # use this, when you want use inside container a other mosquitto_pub/mosquitto_sub-command
    command: [ "mosquitto_sub -h $$MQTT_HOSTNAME -p $$MQTT_PORT -u $$MQTT_USERNAME --pw $${MQTT_PASSWORD} $$MQTT_TOPICS --insecure --cafile /etc/ssl/certs/ca-certificates.crt --tls-version tlsv1.2 -i $$MQTT_CLIENTNAME -F '%I %t %p'" ]

networks:
  default:
    external: true
    name: mynetwork