web_artifact.yaml

# Download files from the web and upload them as workflow artifacts.
#
# Intended to save time and bandwidth from having to download the same file multiple times in a single workflow run.

name: Web artifacts

on:
  workflow_call:
    inputs:
      name:
        required: true
        type: string
        description: Artifact name. See 'actions/upload-artifact'.
      urls:
        required: true
        type: string
        description: JSON string encoding a list of download URLs.
      retention-days:
        type: number
        default: 0
        description: Artifact retention. See 'actions/upload-artifact'.

jobs:
  download:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        url: ${{ fromJSON(inputs.urls) }}
    steps:
      - name: Download file
        # language=sh
        run:
          curl --create-dirs --output-dir artifacts -O ${{ matrix.url }}
      - uses: actions/upload-artifact@v3
        with:
          name: ${{ inputs.name }}
          path: artifacts
          retention-days: ${{ inputs.retention-days }}