Unable to run a 'custom' run command in the devcontainer.json

🐛 bug report

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Description of the problem

My existing devcontainer.json relies on the entrypoint defined in the dockerfile, but this causes the startup to fail.

How has this issue affected you? What are you trying to accomplish?

This means something like systemd or other init system can not be used. To enable this:

    "overrideCommand": false,
    "privileged": true,

is set in the devcontainer.json. This works on a local machine, and on GitHub codespaces.

To Reproduce

For example:

• https://github.com/gbraad-dotfiles/upstream/blob/main/.devcontainer/default/devcontainer.json
• https://github.com/gbraad-dotfiles/upstream/blob/main/.devcontainer/fedora/devcontainer.json

Link to sandbox: link (optional)

Your Environment

Start with the two linked devcontainer.json examples and trace how Codesandbox handles devcontainer.json settings, especially overrideCommand, privileged, and the Dockerfile entrypoint. Compare this behavior with the stated local and GitHub Codespaces behavior. Done means a devcontainer using an existing entrypoint can start with the requested init system configuration.