Thanks Moussa,
I created freepbx virtual machine disk (VHD) on VirtualBox of size 10 GB, removed printer,usb …
Then I uploaded vhd file to Bucket GCP and imported file for image and created instance using the same image on GCP. then i was able to login console of freepbx on browser using its public IP address. but ssh to server machine failed .
that 's all .
Before I tried to use cloudendure but failed to install agent on local machine … that’s why i used above method .