Docker Tags

Reference: docker docs

What are docker tags?

: You can manage versions of docker images using Docker tags

: You can specify additional tags to existing images using Docker's tag command

docker tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG]

When creating Docker images, if tag name specification is omitted, the latest tag is attached as default value
latest tag means the last built / tagged image without specifying a specific tag / version

latest doesn't actually mean the newest version
- You might think :latest tag is always the most recently pushed image, but it's not
- latest is just a tag given as default value for images without tags
latest is not dynamic
- If you don't attach a tag or don't specify the tag as latest, :latest is not affected or newly created
For versioning, it's good practice not to use latest tag but to use patch numbers or git commits in tags

Last updated 7 days ago