Error: pdflatex not found

[anirbanbasu]

I have the following GitHub work flow as a test and it fails, with the error pdflatex not found when invoked using act workflow_dispatch --container-architecture=linux/amd64.

name: Compile PDF

on: workflow_dispatch

jobs:
  compile_pdf:
    runs-on: ubuntu-latest
    steps:
      - name: Copy content from repository
        uses: actions/checkout@v3
      - name: Prepare files
        run: |
          mkdir -p output
      - name: Compile PDF
        uses: docker://pandoc/latex:latest
        with:
           args: --output=output/test.pdf README.md
      - name: Copy output
        uses: actions/upload-artifact@v3
        with:
          name: output
          path: output/test.pdf

The detailed error is:

docker run image=pandoc/latex:latest platform=linux/amd64 entrypoint=[] cmd=["--output=output/test.pdf" "README.md"]
| pdflatex not found. Please select a different --pdf-engine or install pdflatex

However, it runs totally fine if I invoke pandoc using Docker as:

docker run --platform "linux/amd64" --rm --volume "$(pwd):/data" --user $(id -u):$(id -g) pandoc/latex:latest README.md --output=output/test.pdf

I am baffled. Am I missing something pretty simple, or is this an issue with act?