Deploy Error: Non-Zero Exit Code on App Platform Node Script

I have a Node script, that run as pm2 start server.js, but i get always the error below and the script doesn`t run, why?

Deploy Error: Non-Zero Exit Code Common Causes Missing dependencies, incompatible versions, incorrect environment variables or app bugs

Here is my Dockerfile created by Digitalocean:

name: name-socket
region: fra
services:
- build_command: |
    npm install pm2 -g
  environment_slug: node-js
  github:
    branch: master
    deploy_on_push: true
    repo: repo-name-extracted
  http_port: 8080
  instance_count: 1
  instance_size_slug: basic-xs
  name: name-socket
  routes:
  - path: /
  run_command: pm2 start server.js