Gulp build task failing inside docker

I have a simple Hapi.js Node API. Since I have used TypeScript to write the API, I wrote Gulp task for transpiling the code. My API works fine if I run it directly in my main machine but I get the following error when I try to run it inside Docker:

Error:

Here is my code: ./gulpfile:

'use strict';

const gulp = require('gulp');
const rimraf = require('gulp-rimraf');
const tslint = require('gulp-tslint');
const mocha = require('gulp-mocha');
const shell = require('gulp-shell');
const env = require('gulp-env');

/**
 * Remove build directory.
 */
gulp.task('clean', function () {
  return gulp.src(outDir, { read: false })
    .pipe(rimraf());
});

/**
 * Lint all custom TypeScript files.
 */
gulp.task('tslint', () => {
  return gulp.src('src/**/*.ts')
    .pipe(tslint({
      formatter: 'prose'
    }))
    .pipe(tslint.report());
});

/**
 * Compile TypeScript.
 */

function compileTS(args, cb) {
  return exec(tscCmd + args, (err, stdout, stderr) => {
    console.log(stdout);

    if (stderr) {
      console.log(stderr);
    }
    cb(err);
  });
}

gulp.task('compile', shell.task([
  'npm run tsc',
]))

/**
 * Watch for changes in TypeScript
 */
gulp.task('watch', shell.task([
  'npm run tsc-watch',
]))
/**
 * Copy config files
 */
gulp.task('configs', (cb) => {
  return gulp.src("src/configurations/*.json")
    .pipe(gulp.dest('./build/src/configurations'));
});

/**
 * Build the project.
 */
gulp.task('build', ['tslint', 'compile', 'configs'], () => {
  console.log('Building the project ...');
});

/**
 * Run tests.
 */
gulp.task('test', ['build'], (cb) => {
  const envs = env.set({
    NODE_ENV: 'test'
  });

  gulp.src(['build/test/**/*.js'])
    .pipe(envs)
    .pipe(mocha({ exit: true }))
    .once('error', (error) => {
      console.log(error);
      process.exit(1);
    });
});

gulp.task('default', ['build']);

./.docker/dev.dockerfile:

FROM node:latest

LABEL author="Saurabh Palatkar"

# create a specific user to run this container
# RUN adduser -S -D user-app

# add files to container
ADD . /app

# specify the working directory
WORKDIR app
RUN chmod -R 777 .
RUN npm i gulp --g
# build process
RUN npm install
# RUN ln -s /usr/bin/nodejs /usr/bin/node
RUN npm run build
# RUN npm prune --production
EXPOSE 8080
# run application
CMD ["npm", "start"]

./docker-compose.dev.yml:

version: "3.4"

services:
  api:
    image: node-api
    build:
      context: .
      dockerfile: .docker/dev.dockerfile
    environment:
      PORT: 8080
      MONGO_URL: mongodb:27017
      NODE_ENV: development
    ports:
      - "8080:8080"
    links:
      - database

  database:
    image: mongo:latest
    ports:
      - "27017:27017"

What I am missing here?

from Gulp build task failing inside docker