Docker + PM2 - Node Backend APP

.dockerignore

node_modules/
dist/
.git/

.env

APP_HOST=0.0.0.0
APP_PORT=8073
APP_NAME=my-suppa-app

docker-compose.dev.yml

version: '3.5'

x-networks:
  &default-networks
  networks:
  - app-network

networks:
    app-network:
        driver: bridge
        name: "${APP_NAME}-network"

services:
  server:
    << : *default-networks
    environment:
      - NODE_ENV=development
    command: "yarn run dev"

docker-compose.yml

version: '3.5'

services:
  server:
    build:
        context: .
        dockerfile: Dockerfile
    user: "node"
    restart: unless-stopped
    working_dir: /app
    environment:
      - NODE_ENV=production
    volumes:
      - ./:/home/node/app
    ports:
      - ${PORT}:${PORT}
    command: "yarn run start"

Dockerfile

FROM node:12-alpine
RUN apk add --no-cache curl gnupg libstdc++

ENV NODE_ENV production
ENV APP_HOST 0.0.0.0
ENV APP_PORT 8073

WORKDIR /app
COPY package*.json ./
COPY yarn.lock ./
RUN yarn install
COPY . .

CMD ["yarn", "start"]

ecosystem.config.js

module.exports = {
  apps: [{
    name: 'my-suppa-app',
    script: './src/index.js',
    ignore_watch: ['node_modules', 'data', '.git', '*.log'],
    env: {
      NODE_ENV: 'development'
    },
    env_production: {
      NODE_ENV: 'production'
    }
  }]
}

package.json

{
  "start": "pm2 start",
  "dev": "pm2 start --watch"
}