Continuous Deployment of a Node.js app to Heroku using GitLab

Question

There are tutorials covering the deployment of Ruby and Python apps but I can\'t find good documentation or examples for NodeJS.

http://docs.gitlab.com/ce/ci/examples/t

Answer 1

I have found a detailed article for continuous integration on Heroku:

https://medium.com/@seulkiro/deploy-node-js-app-with-gitlab-ci-cd-214d12bfeeb5

Sample .gitlab-ci.yml file :

https://gitlab.com/seulkiro/node-heroku-dpl

Answer 2

1. create a project

 npm init -y
 npm i  #install dependencies 

2. add the following lines in package.json

    "engines": {
        "node": "8.12.0",  //node version
        "npm": "6.4.1"     //npm version
    },
    "scripts": {
        "start": "node app.js", //heroku will using the following script to run node app
    }

3. create a heroku project

   1. select NEW -> Create new app
   2. set the App name & choose a region
   3. click on Create app

4. Gitlab setup create new repo or add to exist project given on gitlab website

5. create a .gitlab-ci.yml file

   image: node:latest
   stages:
   - production
   production:
   type: deploy
   stage: production
   image: ruby:latest
   script:
       - apt-get update -qy
       - apt-get install -y ruby-dev
       - gem install dpl
       - dpl --provider=heroku --app=APPNAME_OF_Heroku App --api-key=$HEROKU_API_KEY # security add the heroku api to CI/CD setting
   only:
       - master  #branch name to deploy on heroku
   
   

6. Setting HEROKU_API_KEY
   1. Setting -> CI/CD -> Variable -> Expand
   2. Input Variable key -> variable name in .gitlab-ci.yml
   3. Input Variable value -> Heroku Api Key

7. Get the Heroku Api Key

   4. Heroki Dashborad -> Account Settings

8. set the Runner on Gitlab

   1. Setting -> CI/CD -> Variable -> Expand
      1. Specific Runners
         1. Install the gitlab-runner
         2. Windows
         3. Linux
         4. MacOS
         5. For setup steps here
      2. Shared Runners
         1. just click Disable shared Runners to enable the shared runner

9. push the files to gitlab it will automatically deploy on heroku

   git add .                 #to add all the files)
   git commit -m "message"   #to commit files
   git push origin master