NATS Core Docker Compose (single)

.env.example

NATS_USER=
NATS_PASSWORD=

docker-compose.dev.yml

services:
  nats:
    image: nats:2.10-alpine
    container_name: nats-dev
    ports:
      - "4222:4222"
      - "8222:8222"
    env_file:
      - .env
    volumes:
      - ./config/nats.conf:/etc/nats/nats-server.conf:ro
      - nats-dev-data:/data
    command: ["-c", "/etc/nats/nats-server.conf"]
    restart: unless-stopped
    healthcheck:
      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:8222/healthz"]
      interval: 10s
      timeout: 5s
      retries: 3
      start_period: 5s
    logging:
      driver: "json-file"
      options:
        max-size: "50m"
        max-file: "3"

volumes:
  nats-dev-data:

nats.conf

server_name: nats-dev

port: 4222
http: 0.0.0.0:8222

authorization {
  users = [
    { user: $NATS_USER, password: $NATS_PASSWORD, permission: { publish: ">", subscribe: ">" } }
  ]
}

logtime: true