build.yml

name: CI build

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
    types: [opened, synchronize]

jobs:
  build:
    runs-on: ubuntu-latest
    name: OTP ${{matrix.otp}} / Elixir ${{matrix.elixir}}

    strategy:
      matrix:
        otp: [24.x]
        elixir: [1.13.x]
        node: [16.x]

    services:
      db:
        image: postgres:14.1
        ports:
          - 5432:5432
        env:
          POSTGRES_USERNAME: postgres
          POSTGRES_PASSWORD: postgres
          POSTGRES_HOSTNAME: 0.0.0.0

    steps:
      - uses: actions/checkout@v2

      - name: Setup elixir
        uses: erlef/setup-beam@v1
        with:
          otp-version: ${{matrix.otp}}
          elixir-version: ${{matrix.elixir}}

      - name: Setup nodejs
        uses: actions/setup-node@v2
        with:
          node-version: ${{ matrix.node }}

      - uses: actions/cache@v2
        with:
          path: deps
          key: ${{ runner.os }}-mix-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
          restore-keys: |
            ${{ runner.os }}-mix-
      - name: Install dependencies
        run: mix deps.get --only prod

      - name: Build the app
        run: |
          export SECRET_KEY_BASE=$(mix phx.gen.secret)
          export DATABASE_URL="ecto://postgres:postgres@0.0.0.0:5432/join_prod"
          MIX_ENV=prod mix compile