get full windows path with bash

Author: davegarthsimpson

.github/workflows/build.yml

@@ -430,13 +430,13 @@ jobs:
         with:
           name: ${{ env.JOB_TRANSFER_ARTIFACT }}
           path: ${{ env.BUILD_ARTIFACTS_PATH }}
-      
+
       - name: Save artifact path to variable
-        shell: pwsh
+        shell: bash
         run: |
-          $artifactPath = Get-ChildItem ${{ env.BUILD_ARTIFACTS_PATH }} -Filter "*Windows_64bit.exe" | Select-Object -First 1 | Resolve-Path -Relative
-          $fullPath = Join-Path -Path (Get-Location).Drive.Root -ChildPath $artifactPath
-          echo "ARTIFACT_PATH=$fullPath" | Out-File -FilePath $env:GITHUB_ENV -Append
+          ARTIFACT=$(find "${{ env.BUILD_ARTIFACTS_PATH }}" -name "*Windows_64bit.exe" | head -n 1)
+          FULL_PATH=$(cygpath -w $ARTIFACT)
+          echo "ARTIFACT_PATH=$FULL_PATH" >> $GITHUB_ENV
 
       - name: Save Win signing certificate to file
         run: echo "${{ secrets.INSTALLER_CERT_WINDOWS_CER }}" | base64 --decode > ${{ env.INSTALLER_CERT_WINDOWS_CER }}