release.yml

name: Release

on:
  release:
    types: [published]

env:
  MIX_ENV: dev
  REQUIRE_VERSION_FILE: true
  CACHE_PREFIX_DEPS: v1-deps
  CACHE_PREFIX_BUILD: v1-_build

jobs:
  publish_to_hex:
    name: Publish to Hex.pm
    runs-on: ubuntu-latest
    container: hexpm/elixir:1.11.2-erlang-22.3.4.3-alpine-3.11.6
    env:
      VERSION_ALPINE: 3.11.6
      VERSION_ELIXIR: 1.11.2
      VERSION_OTP: 22.3.4.3
    steps:
      - uses: actions/checkout@v2

      - name: Write the release version to the version file
        run: |
          echo "Create version file for $GITHUB_REF"
          echo -n "${GITHUB_REF#refs/tags/v}" > version

      - name: Cache - deps/
        uses: actions/cache@v1
        with:
          path: deps/
          key: ${{ env.CACHE_PREFIX_DEPS }}-env:${{ env.MIX_ENV }}-alpine:${{ env.VERSION_ALPINE }}-elixir:${{ env.VERSION_ELIXIR }}-otp:${{ env.VERSION_OTP }}-${{ hashFiles('**/mix.lock') }}
          restore-keys: ${{ env.CACHE_PREFIX_DEPS }}-env:${{ env.MIX_ENV }}-alpine:${{ env.VERSION_ALPINE }}-elixir:${{ env.VERSION_ELIXIR }}-otp:${{ env.VERSION_OTP }}-

      - name: Install Dependencies
        run: |
          mix local.rebar --force
          mix local.hex --force
          mix deps.get --only "$MIX_ENV"

      - name: Cache - _build/
        uses: actions/cache@v1
        with:
          path: _build/
          key: ${{ env.CACHE_PREFIX_BUILD }}-env:${{ env.MIX_ENV }}-alpine:${{ env.VERSION_ALPINE }}-elixir:${{ env.VERSION_ELIXIR }}-otp:${{ env.VERSION_OTP }}-${{ hashFiles('**/mix.lock') }}
          restore-keys: ${{ env.CACHE_PREFIX_BUILD }}-env:${{ env.MIX_ENV }}-alpine:${{ env.VERSION_ALPINE }}-elixir:${{ env.VERSION_ELIXIR }}-otp:${{ env.VERSION_OTP }}-

      - run: mix compile --warnings-as-errors

      - name: Publish to Hex.pm
        run: mix hex.publish --yes
        env:
          HEX_API_KEY: ${{ secrets.HEX_API_KEY }}