In this article, I will show you how to link your Angular app repo with a server. So whenever you push your changes to a specific branch, the server will automatically build and configure your app based on the scripts you defined and publish the app on the fly.

1. Creating an Angular App using Angular CLI

Or you can download the final result HERE

ng new angular-ci-app

Make sure to choose Yes when it asks you to create the app with the Routing.

2. Creating a new GitHub Repo.

If you wonder why my GitHub is on a dark theme check this Chrome extension

3. Open your created app on VS Code

Open the terminal and push your app to the newly created repo

git remote add origin https://github.com/<Your-User-Name>/<Repo-Name>.git
git branch -M master
git push -u origin master

4. Cleaning up and Adding a simple app with Routes.

• Open App.Component.html and delete everything inside and paste the following code.

App.Component.html

<style>
  button {
    margin-right: 20px;
  }
</style>
<button routerLink="/home">Home</button>
<button routerLink="/about">about</button>

<router-outlet></router-outlet>

• Open app-routing.module.ts and paste the following code

app-routing.module.ts

import { NgModule } from "@angular/core";
import { Routes, RouterModule } from "@angular/router";
import { HomeComponent } from "./components/home/home.component";
import { AboutComponent } from "./components/about/about.component";

const routes: Routes = [
  { path: "", redirectTo: "/home", pathMatch: "full" },
  {
    path: "home",
    component: HomeComponent,
  },
  {
    path: "about",
    component: AboutComponent,
  },
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule],
})
export class AppRoutingModule {}

• Create a new folder inside the app folder and name it components and create the Home and the About components.

• Push your changes to the repo

git add .
git commit -m "creating routes"
git push

5. Linking the repo to Netlify

Create a new account on Netlify and follow along with me.

• Click on New Site From Git Button
• Choose GitHub Option

Netlify will ask for permission

• Search for your repo name
• Pick a branch to deploy

The selected branch will be the one which Netlify will be listening on it and whenever you push a change to it Netlify will build your app based on the configuration we will make below.
So, I will choose master for now which is the only branch we currently have.

• Build command

Type the build command of your app, In our case, it will be ng build

• Publish Directory

By default Angular build your application inside a dist folder
and will create another folder inside of it with the name of your app (You will find it inside package.json) in my case its angular-ci-app
So, I will type dist/angular-ci-app

• Finally, Click on Deploy Site.

6. Previewing your app

By default Netlify will give a dummy URL name of your app, You can change it if you want from Site Settings

7. Fixing 404 Page Issue

If you copy the URL with any route for example /home and paste it, this will redirect you to the 404 page.
To solve this problem we have two solutions.

First Solution:

Create _redirects file inside src folder and paste the following line:

/*  /index.html  200 

then open angular.json file search for the assets array => projects > architect > options > assets
and add "src/_redirects"

angular.json

"projects": {
    //...
      "architect": {
        "build": {
          //..
          "options": {
            //..
            "assets": ["src/favicon.ico", "src/assets", "src/_redirects"],

Second Solution:

Put { useHash: true } as a second argument for the forRoot function inside app.routing.module as the following

// ...
@NgModule({
  imports: [RouterModule.forRoot(routes, { useHash: true })],
  exports: [RouterModule],
})

// ...

This will prefix the routes by adding #.

So, the routes will be something like http://localhost:4200/#/home

8. Pushing to the master branch and watch for the changes.

git add .
git commit -m "fixing 404 page"
git push

Go to Netlify and you will find it started to build your app again automatically.

Now, when you copy and paste the URL you will no longer be directed to the 404 page.

See my final Result https://angular-ci.netlify.app/#/home

Tips

I will tell you some tips that I personally use on my own projects

• I usually create a demo branch and link this branch to Netlify.
• I create another branch dev and I commit and push my changes on it and when I want to publish my changes to the client I merge the dev branch into the demo branch and push the changes.