问如何在GitHub操作工作流中获取请求号

EN

env:
  PR_NUMBER: ${{ github.event.number }}

      - name: Get Pull Request Number
        id: pr
        run: echo "::set-output name=pull_request_number::$(gh pr view --json number -q .number || echo "")"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

${{ steps.pr.outputs.pull_request_number }}

  - name: Test
    uses: actions/github-script@0.3.0
    with:
      github-token: ${{github.token}}
      script: |
        const core = require('@actions/core')
        const prNumber = context.payload.number;
        core.exportVariable('PULL_NUMBER', prNumber);