name: png_file_checks

# Check whether all png files are in a valid format
on:
  push:
    paths:
      - '**.png'
      - '.github/workflows/**.yml'
  pull_request:
    paths:
      - '**.png'
      - '.github/workflows/**.yml'

jobs:
  png_optimized:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Install deps
        run: |
          sudo apt-get update
          sudo apt install -y optipng

      - name: Check whether all png files are optimized
        run: |
          ./util/ci/check_png_optimized.sh