version: '3'
services:
  backend:
    build: .
    depends_on:
      - db
      - mqtt
    environment:
      # Keycloak config
      KEYCLOAK_URL: ${KEYCLOAK_URL:?err}
      KEYCLOAK_USER_NAME: ${KEYCLOAK_USER_NAME:?err}
      KEYCLOAK_USER_PW: ${KEYCLOAK_USER_PW:?err}
      KEYCLOAK_REALM: ${KEYCLOAK_REALM:?err}
      # DB config
      DB_HOSTNAME: ${DB_HOSTNAME:?err}
      DB_USERNAME: ${DB_USERNAME:?err}
      DB_PASSWORD: ${DB_PASSWORD:?err}
      DB_DATABASE: ${DB_DATABASE:?err}
      # MQTT config
      MQTT_USERNAME: ${MQTT_USERNAME:?err}
      MQTT_PASSWORD: ${MQTT_PASSWORD:?err}
      MQTT_BROKER: ${MQTT_BROKER:?err}
      MQTT_CLIENT: ${MQTT_CLIENT:?err}
    restart: unless-stopped
  db:
    image: postgres:15-alpine
    volumes:
      - ./sql/:/docker-entrypoint-initdb.d/:ro,Z
    environment:
      POSTGRES_DB: ${DB_DATABASE}
      POSTGRES_USER: ${DB_USERNAME}
      POSTGRES_PASSWORD: ${DB_PASSWORD}
  mqtt:
    image: eclipse-mosquitto:2
    environment:
      MQTT_USERNAME: ${MQTT_USERNAME}
      MQTT_PASSWORD: ${MQTT_PASSWORD}
    entrypoint:
      - sh
      - -c
      - |
        touch /mosquitto/config/passwd
        mosquitto_passwd -b /mosquitto/config/passwd $${MQTT_USERNAME:?err} $${MQTT_PASSWORD:?err}
        echo "bind_address 0.0.0.0" > /mosquitto/config/mosquitto.conf
        echo "password_file /mosquitto/config/passwd" >> /mosquitto/config/mosquitto.conf
        echo "allow_anonymous false" >> /mosquitto/config/mosquitto.conf
        /usr/sbin/mosquitto -c /mosquitto/config/mosquitto.conf