It is very strange that I can not use my private/public key pair to connect my VPS on Google Computer Engine. Although I can SFTP to the same VPS with same keys in Filezilla client, and PuTTY client.
I did a lot of try. At the last I found it is because I make the keys by PuTTY Key Generator program.
My PuTTY programs are the latest version 0.70.
It is the solution to tell you how to SFTP to Google Computer Engine in Dreamweaver 2017, or even Dreamweaver 2018.
Step 1, Generate public/private key pair
Run Git Bash terminal window.
I want to make the key by my name, binghuiyin
ssh-keygen -t rsa -b 2048 -C "binghuiyin"
Then it will ask for the location of the keys. I prefer to have them in d:/gce-key/ folder.
It will also ask for the passphrase. So I entered my password.
Done, I have two files in the d:/gce-key/
binghuiyin is the private key.
binghuiyin.pub is the public key.