Regular Expressions 101

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Regular Expression
Created·2022-06-27 11:13
Flavor·JavaScript

/
^(?:(?=[^:\/]{4,253})(?!-)[a-zA-Z0-9-]{1,63}(?<!-)(?:\.(?!-)[a-zA-Z0-9-]{1,63}(?<!-))*(?::[0-9]{1,5})?\/)?((?![._-])(?:[a-z0-9._-]*)(?<![._-])(?:\/(?![._-])[a-z0-9._-]*(?<![._-]))*)(?::(?![.-])[a-zA-Z0-9_.-]{1,128})?$
/
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Description

javascript regex for docker image tag name from doc

Submitted by ahmad safari