Install the [Dev Containers Extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers)
Using Dev Containers, attach to your Laravel Workspace Container. A new VSCode window will open.
Ensure that you have PHP intellisense and Laravel extensions installed within the container. You'll have to go to the extensions tab again and you will see `Install in Container <container name>.
Set your [php executable path](https://code.visualstudio.com/docs/languages/php). On a Mac you need to go to Code > Settings > Settings, and select the remote container tab.
Then add
`"php.validate.executablePath": "/usr/bin/php"`