update proxy parameter

Author: ThomasRupp

utils/image-builder-using-azure-devops/azure-pipelines-with-proxy.yml

@@ -55,7 +55,7 @@ steps:
 
 - script: |
     echo '$(EMPOWER_PASSWORD)' > pass.txt
-    sh installer.bin create container-image --name '${{parameters.TAG}}' --release '${{parameters.RELEASE}}' --accept-license --products '${{parameters.PRODUCTS}}' --username '$(EMPOWER_USERNAME)' --password:file=pass.txt --admin-password '${{parameters.ADMIN_PASSWORD}}' --base-image '${{parameters.BASE_IMAGE}}' -proxyHost '$(PROXY_HOST)' -proxyPort '$(PROXY_PORT)'
+    sh installer.bin create container-image --name '${{parameters.TAG}}' --release '${{parameters.RELEASE}}' --accept-license --products '${{parameters.PRODUCTS}}' --username '$(EMPOWER_USERNAME)' --password:file=pass.txt --admin-password '${{parameters.ADMIN_PASSWORD}}' --base-image '${{parameters.BASE_IMAGE}}' --proxy '$(PROXY)'
     rm pass.txt
   displayName: 'Start Installer to create image'