title: Copy files to GitHub Workspace
body: <p>I have a few steps to copy some folders from source code to GitHub WorkSpace as shown below. On running this build I see</p>
  <blockquote>
  <p>Warning: No files were found with the provided path: ${GITHUB_WORKSPACE}. No artifacts will be uploaded.</p>
  </blockquote>
  <p>I checked and confirmed that both folders are not empty. What am I missing?</p>
  <pre><code>   - name: copy arm templates
        run: Copy 'Infrastructure/' '${GITHUB_WORKSPACE}/Infrastructure'
        shell: powershell
        
      - name: copy release management scripts
        run: Copy 'Scripts/' '${GITHUB_WORKSPACE}/Scripts'
        shell: powershell
        
      - name: publish artifact
        uses: actions/upload-artifact@v2
        with:
          path: ${GITHUB_WORKSPACE}
          name: ${{ env.VERSION_MAJOR }}.${{ env.VERSION_MINOR }}
    
  </code></pre>