Docker images does not have moving tags

[aleksandr-vin]

In CI/CD tags with only major and/or major.minor version numbers would be really helpful

[McFoggy]

:+1: for this RFE.

To provide some background here is our use case that would benefit from that.

We use .nvmrc files in pour projects and automatically build docker images name from it's content. We have things like the following in our CI/CD (Jenkinsfile in our case)

insideDocker(dockerImageFromNVM()) {
   // here we should be in a docker container whose tag has been computed from nvmrc content
   // base image is by default node
   // supposing our .nvmrc contains `v16`
   // so something like "node:16"
}

but we also have usages like the following for webapps/libraries projects

insideDocker(dockerImageFromNVM(base: "cypress/base")) {
   // here we should be in a docker container whose tag has been computed from nvmrc content
   // base image here will be cypress/base
   // so something like "cypress/base:16"
}

Moving/floating tags would ease such use cases.