sample terraform workflow 4-2

name: 'Terraform GitHub Actions'
on:
  pull_request:
    branches:
      - master
    paths:
      - service2/**
      - modules/**
  push:
    branches:
      - master
    paths:
      - service2/**
      - modules/**
jobs:
  terraform:
    name: 'Terraform'
    runs-on: ubuntu-latest
    strategy:
      matrix:
        env: [dev, prod]
        workdir: [./service2/ec2, ./service2/iam-role]
    env:
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      AWS_ACCESS_KEY_ID:  ${{ secrets.AWS_ACCESS_KEY_ID }}
      AWS_SECRET_ACCESS_KEY:  ${{ secrets.AWS_SECRET_ACCESS_KEY }}
      TF_WORKSPACE:  ${{ matrix.env }}
    steps:
      - name: 'Checkout'
        uses: actions/checkout@master
      - name: 'Terraform Format'
        uses: hashicorp/terraform-github-actions@master
        with:
          tf_actions_version: 0.12.17
          tf_actions_subcommand: 'fmt'
          tf_actions_working_dir: ${{ matrix.workdir }}
      - name: 'Terraform Init'
        uses: hashicorp/terraform-github-actions@master
        with:
          tf_actions_version: 0.12.17
          tf_actions_subcommand: 'init'
          tf_actions_working_dir: ${{ matrix.workdir }}
      - name: 'Terraform Validate'
        uses: hashicorp/terraform-github-actions@master
        with:
          tf_actions_version: 0.12.17
          tf_actions_subcommand: 'validate'
          tf_actions_working_dir: ${{ matrix.workdir }}
      - name: 'Terraform Plan'
        uses: hashicorp/terraform-github-actions@master
        with:
          tf_actions_version: 0.12.17
          tf_actions_subcommand: 'plan'
          tf_actions_working_dir: ${{ matrix.workdir }}
      - name: 'Terraform Apply'
        if: github.ref == 'refs/heads/master'
        uses: hashicorp/terraform-github-actions@master
        with:
          tf_actions_version: 0.12.17
          tf_actions_subcommand: 'apply'
          tf_actions_working_dir: ${{ matrix.workdir }}