Add support RHEL 10

[alexpts]

Need rmp repo for RHEL10 / Rocky Linux 10

[Ray0907]

Hit the same issue on RHEL 10.0 (Coughlan).

The docs explicitly list RHEL 10 as supported:
https://docs.docker.com/engine/install/rhel/#install-using-the-repository

However, the repo URL https://download.docker.com/linux/rhel/10.0/ returns 404, making both the standard install and the convenience script (get.docker.com) fail.

Workaround: After adding the repo, force it to use the RHEL 9 packages:

sudo sed -i 's/$releasever/9/g' /etc/yum.repos.d/docker-ce.repo
sudo dnf install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

Working fine so far with Docker CE on RHEL 10.0.

[742764146]

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