Suggest an editImprove this articleRefine the answer for “What does an image tag do?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)A **tag** on an image is a pointer to a specific version of the image within a repository. **Key point:** a tag is a version label of a Docker image that lets you unambiguously identify the build you need.Shown above the full answer for quick recall.Answer (EN)ImageA tag on an image is **a pointer to a specific version of the image within a repository**. It helps distinguish one build from another and choose exactly which version to run or download. ### Why a tag is needed - distinguish versions (`1.0`, `2.0`, `alpine`, `dev`) - manage updates - unambiguously reference a specific image ### Example ```javascript docker pull nginx:1.25 ``` downloads a specific version, while: ```javascript docker pull nginx:latest ``` takes the default version, marked as `latest`. ### An important detail A tag is **not a copy**, just a label that points to a certain image. The same image can have several tags. **Summary:** a tag is a version label of a Docker image that lets you unambiguously identify the build you need.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.