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Merge pull request #3479 from fezzik1620/master 

docs: hyphens are not dashes
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Sebastiaan van Stijn 2022-03-21 13:47:11 +01:00 committed by GitHub
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docs/reference/commandline/tag.md
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@ -23,12 +23,12 @@ may not contain underscores. If a hostname is present, it may optionally be
followed by a port number in the format `:8080`. If not present, the command
uses Docker's public registry located at `registry-1.docker.io` by default. Name
components may contain lowercase letters, digits and separators. A separator
is defined as a period, one or two underscores, or one or more dashes. A name
is defined as a period, one or two underscores, or one or more hyphens. A name
component may not start or end with a separator.
A tag name must be valid ASCII and may contain lowercase and uppercase letters,
digits, underscores, periods and dashes. A tag name may not start with a
period or a dash and may contain a maximum of 128 characters.
digits, underscores, periods and hyphens. A tag name may not start with a
period or a hyphen and may contain a maximum of 128 characters.
You can group your images together using names and tags, and then upload them
to [*Share images on Docker Hub*](https://docs.docker.com/get-started/part3/).