I have a rather complex setup (corporate proxy) where I need to set proxies in the vscode remote container in order to do anything.
This works great if I set HTTP_PROXY and such in the containerEnv in devcontainer.json.
Now in case someone wants to temporarily add a tool via apt, one needs to use sudo in order to use apt. But the root user does not contain any of the environment variables passed in containerEnv or remoteEnv or even via runArgs.
This can be verified by running sudo env in the container which does not list any of the variables I set.
How can I set environment variables for the root user in the devcontainer.json file?