name: 'CLEANUP DOCKER'
description: '清理 Docker 沒用到的資源'
author: 'Jeffery'
inputs:
  DISK_USAGE_THRESHOLD:
    description: '磁碟使用量閾值'
    default: '80'
runs:
  using: 'composite'
  steps:
  - name: 取得磁碟使用率
    id: disk
    run: |
      USAGE=$(df / | awk 'NR==2{print $5}' | tr -d '%')
      echo "磁碟使用率：${USAGE}%"
      if [ "$USAGE" -gt "$DISK_USAGE_THRESHOLD" ]; then
        echo "should_prune=true" >> $GITHUB_OUTPUT
      else
        echo "使用率為 ${USAGE}%，低於閾值，跳過清理"
        echo "should_prune=false" >> $GITHUB_OUTPUT
      fi
  - name: 清理 Docker 資源
    if: steps.disk.outputs.should_prune == 'true'
    run: docker system prune -af --volumes