Pattern
/(?:[a-z0-9]+(?:[._-][a-z0-9]+)*/)*[a-z0-9]+(?:[._-][a-z0-9]+)*(?::[a-z0-9][\w.-]*)?/
Sample text
nginx:1.27-alpine ghcr.io/org/app:latest ubuntuTest this pattern in the editor
Docker image refs
registry/name:tag image references.
Related patterns
Semantic versions
MAJOR.MINOR.PATCH with optional pre-release.
Git short SHA
7–40 hex characters typical of git commits.
Unix absolute paths
Absolute POSIX-style filesystem paths.
Windows paths
Drive-letter paths with backslashes.
Trailing whitespace
Find spaces/tabs at end of lines.
Hex literals
0x-prefixed hexadecimal integers.