Angular build not compiled correctly GitHub Actions

I am using GitHub actions to create a release build when a tag gets pushed. However, once it runs and I check the releases tab it hasn’t created the release correctly. Normally when you run ng build --prod it compiles all of your code into a few files reducing the file size massively. When I download the project from the releases tab it’s just normal like I would view it in a file explorer.

This is my workflow yaml file:

name: dev-release

on:

  create:

    tags:

      - v*

jobs:

  build:

    name: setup environment

    runs-on: ubuntu-latest

    strategy:

      matrix:

        node-version: [12.x]

    steps:

      - uses: actions/checkout@v2

        with:

          fetch-depth: 0

      - name: Cache node modules

        uses: actions/[email protected]

        with:

          path: ~/.npm

          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}

          restore-keys: |

            ${{ runner.os }}-node-

      - name: Node ${{ matrix.node-version }}

        uses: actions/[email protected]

        with:

          node-version: ${{ matrix.node-version }}

      - name: npm install

        run: |

          npm i

          npm run build:ci

      - name: Create Release

        uses: ncipollo/release-action@v1

        with:

          token: ${{ secrets.TOKEN }}

          draft: true