Add prompt of $
Signed-off-by: YuPengZTE <yu.peng36@zte.com.cn>
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@ -71,7 +71,7 @@ The `docker` package creates a new group named `docker`. Users, other than
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`root` user, must be part of this group to interact with the
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Docker daemon. You can add users with this command syntax:
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sudo /usr/sbin/usermod -a -G docker <username>
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$ sudo /usr/sbin/usermod -a -G docker <username>
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Once you add a user, make sure they relog to pick up these new permissions.
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