Elixir CI with Github Actions

ci-simple.yaml

on:
  push:
    branches: [master, develop]
  pull_request:
    branches: [master, develop]

env:
  MIX_ENV: test

jobs:
  test:
    runs-on: ubuntu-latest

    strategy:
      matrix:
        elixir: [1.11.4]
        otp: [23.2.7]

    services:
      db:
        image: postgres:12-alpine
        ports: ["5432:5432"]
        env:
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
          POSTGRES_DB: settld_dev
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
    steps:
      - uses: actions/checkout@v2

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

      - name: Retrieve Mix Dependencies Cache
        uses: actions/cache@v1
        id: mix-cache
        with:
          path: deps
          key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}

      - name: Install Mix Dependencies
        if: steps.mix-cache.outputs.cache-hit != 'true'
        run: |
          mix local.rebar --force
          mix local.hex --force
          mix deps.get
      - name: Check Formatting
        run: mix format --check-formatted

      - name: Compile project without warnings
        run: mix compile --warnings-as-errors

      - name: Import environment variables from .env
        shell: bash
        run: |
          while read line; do
            echo "$line" >> $GITHUB_ENV
          done < ./.env.ci
      - name: Run tests
        run: mix test

      - name: Retrieve PLT Cache
        uses: actions/cache@v1
        id: plt-cache
        with:
          path: priv/plts
          key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-plts-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}

      - name: Create PLTs
        if: steps.plt-cache.outputs.cache-hit != 'true'
        run: |
          mkdir -p priv/plts
          mix dialyzer --plt
      - name: Run dialyzer
        run: mix dialyzer --no-check

ci-with-asdf.yaml

on:
  push:
    branches: [master, develop]
  pull_request:
    branches: [master, develop]

env:
  MIX_ENV: test

jobs:
  test:
    runs-on: ubuntu-latest

    services:
      db:
        image: postgres:12-alpine
        ports: ["5432:5432"]
        env:
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
          POSTGRES_DB: settld_dev
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Determine the Elixir version
        run: echo "ELIXIR_VERSION=$(grep -h elixir .tool-versions | awk '{ print $2 }' | awk -F - '{print $1}')" >> $GITHUB_ENV

      - name: Determine the OTP version
        run: echo "OTP_VERSION=$(grep -h erlang .tool-versions | awk '{ print $2 }')" >> $GITHUB_ENV

      - name: Setup Elixir and Erlang versions
        uses: erlef/setup-beam@v1
        with:
          elixir-version: ${{ env.ELIXIR_VERSION }}
          otp-version: ${{ env.OTP_VERSION }}

      - name: Restore the deps cache
        uses: actions/cache@v1
        id: deps-cache
        with:
          path: deps
          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-mixlockhash-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
          restore-keys: |
            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-deps-

      - name: Restore the _build cache
        uses: actions/cache@v1
        id: build-cache
        with:
          path: _build
          key: ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-build-mixlockhash-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
          restore-keys: |
            ${{ runner.os }}-${{ env.ELIXIR_VERSION }}-${{ env.OTP_VERSION }}-${{ env.MIX_ENV }}-build-

      - name: Fetch mix dependencies
        if: steps.deps-cache.outputs.cache-hit != 'true'
        run: |
          mix local.rebar --force
          mix local.hex --force
          mix deps.get

      - name: Compile dependencies
        if: steps.deps-cache.outputs.cache-hit != 'true'
        run: mix deps.compile

      - name: Compile project without warnings
        run: mix compile --warnings-as-errors

      - name: Check Formatting
        run: mix format --check-formatted

      - name: Import environment variables from .env
        shell: bash
        run: |
          while read line; do
            echo "$line" >> $GITHUB_ENV
          done < ./.env.ci

      - name: Run tests
        run: mix test

      - name: Retrieve PLT Cache
        uses: actions/cache@v1
        id: plt-cache
        with:
          path: priv/plts
          key: ${{ runner.os }}-${{ env.OTP_VERSION }}-${{ env.ELIXIR_VERSION }}-plts-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}

      - name: Create PLTs
        if: steps.plt-cache.outputs.cache-hit != 'true'
        run: |
          mkdir -p priv/plts
          mix dialyzer --plt

      - name: Run dialyzer
        run: mix dialyzer --no-check