dungdm93/semver-regex.md

## semver-regex.md

      
    Raw
  

              semver-regex.md
            
          
    Canonical regex

/^
(?'MAJOR'
    0|(?:[1-9]\d*)
)
\.
(?'MINOR'
    0|(?:[1-9]\d*)
)
\.
(?'PATCH'
    0|(?:[1-9]\d*)
)
(?:-(?'prerelease'
    (?:0|(?:[1-9A-Za-z-][0-9A-Za-z-]*))
    (?:\.
        (?:0|(?:[1-9A-Za-z-][0-9A-Za-z-]*))
    )*
))?
(?:\+(?'build'
    (?:0|(?:[1-9A-Za-z-][0-9A-Za-z-]*))
    (?:\.
        (?:0|(?:[1-9A-Za-z-][0-9A-Za-z-]*))
    )*
))?
$/
regex101 | ref
Simple Regex used for Docker image tag

^v?(\d+)(\.\d+){0,2}(-[\w\.\+\-]+)?$