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: 
Docker compose command:
docker-compose -f docker-compose.dev.yml up -d --build 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?
1 Answers
Answers 1
Each Dockerfile's command is executed in a separated subcontainer, so RUN npm run build can't find the gulp executable. Try to edit you Dockerfile to execute npm-related commands in the same subcontainer:
RUN npm i gulp --g && npm install && ln -s /usr/bin/nodejs /usr/bin/node && npm prune --production Maybe you also need to copy app files into the container.
Try adding:
COPY . . just before CMD ["npm", "start"] in your Dockerfile
