Request: Local buildx tag aliases

buildx multiplatform tag aliasing appears to be strangely restricted to remote registries.

If so, this complicates development processes in several ways.

  • Breaks immutable image development patterns
  • Requires the original tag to have already been pushed remotely before aliasing
  • Incurs network costs
  • Incurs rate limits
  • Requires nonfree accounts
  • Breaks personal namespaces
  • Assumes an active, high speed, uncensored Internet connection at all times
  • Generally slows down development work on multiplatform images

Could there be a way to create local buildx tag aliases, just like ordinary, single platform images?