VSCode remote developing

First step, install remote pack. Now, at the left-button of your vscode should have a SSH: ... button. After clicked it, there will show some options. Let's select Open SSH Configuration File..., pick one, and put the following content into it(replaced with current value):

Host <host-ip>
  HostName <host-ip>
  IdentityFile <private-key-file>
  User <user-name>

After these, select Connect to Host option, now we can select remote path to develop now! It seems all good, but you find you lost your LSP and some plugins. That's fine, vscode supports installing plugins for remote, installing them. Now, you are good.