ubuntu.md: minor update for apt-key usage #9373
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Please use the `--keyring /etc/apt/trusted.gpg.d/docker.gpg` option for apt-key when add a new key. It makes the installation cleaner, instead of modifying system wide binary file it creates a new dedicated one. Easier to clean up as it's enough simple delete the file (apt-key del... works too).
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Please use the
--keyring /etc/apt/trusted.gpg.d/docker.gpgoption for apt-key when add a new key. It makes the installation cleaner, instead of modifying system wide binary file it creates a new dedicated one. Easier to clean up as it's enough simple delete the file (apt-key del... works too).