Fedora support

[andyli]

Fedora is fine with using the existing scripts (common-redhat and docker-redhat), with a simple fix in docker-redhat.sh.

[bamurtaugh]

@smankoo as you're listed as a maintainer on https://github.com/microsoft/vscode-dev-containers/blob/main/script-library/docker-redhat.sh, would love to hear your thoughts on this.

[andyli]

The change is rather minimal. Is there a chance to have it merged?

[bamurtaugh]

Thanks again for opening this PR.

As a heads up, our team has been actively focused on an updated plan for community contributions and this repo moving forward, which we've now outlined in this issue: #1589. This includes moving to a couple new repos for images (https://github.com/devcontainers/images) and Features (https://github.com/devcontainers/features).

We anticipate to have a similar repo and distribution process for templates/definitions. We'll keep everyone updated (likely via another issue in this repo or comment on #1589) when our new templates repo is available and the process is defined.

Please let me know if you have any questions, thank you!