SSL TLS connect

I have a Teltonika TMT250 GPS tracker
on the server I deployed services in a Docker container
How do I set up an encrypted channel between the TMT250 tracker and the server.

My docker-compose such:

version: '3.3'
services:
  db:
    container_name: mariadb
    image: mariadb:11.7.2
    env_file:
      - ./.env
    volumes:
      - traccar_dbdata:/var/lib/mysql
    restart: always
  app:
    container_name: traccar
    image: traccar/traccar:6-ubuntu
    ports:
      - "5027:5027/tcp"
      - "5027:5027/udp"
      - 8082:8082
    volumes:
      - ./conf/traccar.xml:/opt/traccar/conf/traccar.xml
      - ./logs:/opt/traccar/logs:rw
    depends_on:
      - db
    restart: always
  caddy:
    container_name: caddy
    image: caddy:latest
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./Caddyfile:/etc/caddy/Caddyfile
      - caddy_data:/data
      - caddy_config:/config
    depends_on:
      - app
    restart: always

Thanks in advance for your help and clarification.