Handle multiple prefixes with Bake

Let's say I have a Dockerfile like so:

FROM debian:latest AS debian

[...]


# debian is the default
FROM debian


FROM ubuntu:latest AS ubuntu

[...]


FROM alpine:latest AS alpine

[...]

And a docker-bake.hcl like so:

group "default" {
  targets = ["debian"]
}

group "all" {
  targets = ["debian", "ubuntu", "alpine", "centos"]
}

target "base" {
  context = "."
}

target "debian" {
  inherits = ["base"]
  target = "debian"
}

target "ubuntu" {
  inherits = ["base"]
  target = "ubuntu"
}

target "alpine" {
  inherits = ["base"]
  target = "alpine"
}

Any suggestions on how could I integrate the Metadata Action with the Bake Action so I would have tags generated with prefixes like:

my-image:latest # debian
my-image:debian
my-image:ubuntu
my-image:alpine

And of course, tagging with semver like my-image:alpine-1.1.0.

Start with the Dockerfile stages and the docker-bake.hcl targets shown in the issue, then review how the Metadata Action and Bake Action are configured together. Define how each Bake target should receive prefixed image tags, including semver tags, and verify the default and all groups produce the requested tag set.