Wait for MSI install

msiexec launches the installation of Fibratus in the background and returns immediately. The side effect is that the next step, will never found the Fibratus binary ready to run the rules validation. The solution consists of waiting for the msiexec process to complete before executing the next step

.github/workflows/rules.yml

@@ -21,8 +21,10 @@ jobs:
         search_artifacts: true
     - name: Install Fibratus
       run: |
-        msiexec /i fibratus-0.0.0-amd64.msi /qn /l*v install.log || cat install.log
+        $exec = Start-Process "msiexec" "/i fibratus-0.0.0-amd64.msi /qn /l*! install.log" -NoNewWindow -PassThru;
+        $tail = Start-Process "powershell" "Get-Content -Path install.log -Wait" -NoNewWindow -PassThru;
+        $exec.WaitForExit();
+        $tail.Kill()
     - name: Validate rules
       run: |
-        $env:PATH += ";$env:ProgramFiles\Fibratus\Bin"
         fibratus rules validate