Precisa de uma VPS no Brasil para rodar Docker? Está aqui.

# Instale o Docker (Engine + Compose) e verifique:
curl -fsSL https://get.docker.com | sh
docker --version
docker compose version

# Exemplo: stack de produção com NGINX + app + banco
cat <<'EOF' > docker-compose.yml
services:
  nginx:
    image: nginx:alpine
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./nginx.conf:/etc/nginx/nginx.conf:ro
      - certbot_www:/var/www/certbot
      - certbot_certs:/etc/letsencrypt
    depends_on:
      - app

  app:
    image: node:20-alpine
    working_dir: /app
    volumes:
      - ./app:/app
    command: node server.js
    environment:
      - DATABASE_URL=postgresql://user:senha@db:5432/mydb

  db:
    image: postgres:16
    restart: always
    environment:
      POSTGRES_USER: user
      POSTGRES_PASSWORD: senha
      POSTGRES_DB: mydb
    volumes:
      - pg_data:/var/lib/postgresql/data

volumes:
  pg_data:
  certbot_www:
  certbot_certs:
EOF

docker compose up -d