How to use /bin/bash with Docker Remote Development

Using the (amazing) Remote Development extension, I am able to start a remote development environment in a Docker container.

However, VS Code terminal only starts at /bin/sh and I am unable to tell it to use /bin/bash instead.

I’ve tried updating VS Code preferences "docker.attachShellCommand.linuxContainer": "/bin/bash", to no avail.

Any idea?

Source: StackOverflow