Answer
An image tag identifies the image version, such as nginx:1.25. Without a tag, Docker uses :latest.
Quick Answer
An image tag is a label that identifies a specific version of an image — like nginx:1.25 or myapp:v2.1. Without a tag, Docker defaults to latest. Tags are just pointers — they don't guarantee the image is the "latest" version unless you explicitly updated them. Tag images with commit hashes or version numbers for traceability.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
Want to bookmark, take notes, or join discussions?
Sign in to access all features and personalize your learning experience.
Source: SugharaIQ