bug: devcontainerCLI doesn't respect docker.host setting for remote ssh docker daemon

• VSCode Version: 1.59.0
• Local OS Version: Windows 10 19043
• Remote OS Version: Ubuntu live server 20.04
• Remote Extension/Connection Type: SSH/Docker
• Logs:
  devcontainer cli: remoteContainers-2021-08-10T18-25-28.945Z.log
  reopen in container: remoteContainers-2021-08-10T18-39-11.063Z.log

Steps to Reproduce:

1. Create a workspace with a .devcontainer folder with any of the default microsoft devcontainer examples
2. in user settings, set setting docker.host to ssh://username@ip (you'll need to setup a remote docker daemon to do this as described here)
3. open workspace through devcontainer open /path/to/workspace

Expected Result:
devcontainer cli actually opens the workspace through a local DOCKER_HOST rather than through the docker.host setting

Workaround:
You can just run code /path/to/workspace and then from the command pallet run Reopen in container which will respect the docker.host setting

Does this issue occur when you try this locally?: N/A
Does this issue occur when you try this locally and all extensions are disabled?: N/A