Node.js container on gce with pid and exit on ctrl-c

README.md

~/lab2 $ ls

Dockerfile  index.js  package.json

~/lab2 $ uname -a

Linux instance-gke 4.4.70+ #1 SMP Fri Oct 6 05:36:11 PDT 2017 x86_64 Intel(R) Xeon(R) CPU @ 2.20GHz GenuineIntel GNU/Linux

~/lab2 $ cat /etc/release

CHROMEOS_AUSERVER=https://tools.google.com/service/update2
...
CHROMEOS_RELEASE_BRANCH_NUMBER=79
CHROMEOS_RELEASE_BUILDER_PATH=lakitu-release/R61-9765.79.0
CHROMEOS_RELEASE_BUILD_NUMBER=9765
CHROMEOS_RELEASE_BUILD_TYPE=Official Build
CHROMEOS_RELEASE_CHROME_MILESTONE=61
CHROMEOS_RELEASE_DESCRIPTION=9765.79.0 (Official Build) stable-channel lakitu 
CHROMEOS_RELEASE_NAME=Chrome OS
CHROMEOS_RELEASE_PATCH_NUMBER=0
CHROMEOS_RELEASE_TRACK=stable-channel
CHROMEOS_RELEASE_VERSION=9765.79.0
DEVICETYPE=OTHER
GOOGLE_RELEASE=9765.79.0
HWID_OVERRIDE=LAKITU DEFAULT
BUILD_ID=9765.79.0
NAME="Container-Optimized OS"
GOOGLE_CRASH_ID=Lakitu
VERSION_ID=61
BUG_REPORT_URL=https://crbug.com/new
PRETTY_NAME="Container-Optimized OS from Google"
VERSION=61
GOOGLE_METRICS_PRODUCT_ID=26
HOME_URL="https://cloud.google.com/compute/docs/containers/vm-image/"
ID=cos

~/lab2 $ docker build . -t makz-labs/14601556

Sending build context to Docker daemon 4.096 kB
Step 1/10 : FROM node:8
 ---> b87c2ad8344d
Step 2/10 : USER node
 ---> Using cache
 ---> 1f37b5f2835f
Step 3/10 : ENV HOME /home/node
 ---> Using cache
 ---> f23db773276a
Step 4/10 : RUN mkdir $HOME/app
 ---> Using cache
 ---> 0aaa97a8b2b3
Step 5/10 : WORKDIR $HOME/app
 ---> Using cache
 ---> c9273837c0bf
Step 6/10 : COPY package.json $HOME/app
 ---> Using cache
 ---> 916973d294c5
Step 7/10 : RUN npm set progress=false &&     npm config set depth 0 &&     npm install --only=production &&     np
m cache clean --force
 ---> Using cache
 ---> 0bf5558e6f1c
Step 8/10 : COPY . $HOME/app
 ---> Using cache
 ---> cbe1454f4924
Step 9/10 : ENV NODE_APP_INSTANCE osBTCM2
 ---> Using cache
 ---> ede6174cd075
Step 10/10 : ENTRYPOINT node index.js
 ---> Using cache
 ---> d40f47895b88
Successfully built d40f47895b88

~/lab2 $ docker run -it --rm makz-labs/14601556

This process is your pid 1
Running on http://0.0.0.0:8080
^CCaught interrupt signal

Dockerfile

FROM node:8
USER node
ENV HOME=/home/node
RUN mkdir $HOME/app
WORKDIR $HOME/app
COPY package.json $HOME/app
RUN npm set progress=false && \
    npm config set depth 0 && \
    npm install --only=production && \
    npm cache clean --force
COPY . $HOME/app
ENV NODE_APP_INSTANCE TEST_ENV
ENTRYPOINT ["node", "index.js"]

index.js

'use strict';

const express = require('express');
const process = require('process');

// Constants
const PORT = 8080;
const HOST = '0.0.0.0';

// App
const app = express();
app.get('/', (req, res) => {
  res.send('Hello world\n');
});

// Exit on Ctrl-c
process.on('SIGINT', function() {
  console.log("Caught interrupt signal");
  if (true)
    process.exit();
});

// Run app
app.listen(PORT, HOST);

// Catch Process
if (process.pid) {
  console.log('This process is your pid ' + process.pid);
}

// Log it
console.log(`Running on http://${HOST}:${PORT}`);

package.json

{
  "name": "web_app",
  "version": "1.0.0",
  "description": "Node.js on Docker",
  "author": "GKE User",
  "main": "index.js",
  "scripts": {
    "start": "node index.js"
  },
  "dependencies": {
    "express": "^4.13.3"
  }
}