Sequential build of targets

[sprat]

I'm currently trying to rewrite my old CI workflow using build bake and I think I missed something.

Consider this dockerfile and this bake file:

FROM alpine AS release
RUN apk add dep1
ADD my-script /usr/local/bin

FROM release AS test
COPY test.sh .
RUN ./test.sh

target "release" {
  target = "release"
  tags = ["owner/image:latest"]
}

target "test" {
  target = "test"
  output = ["type=cacheonly"]
}

In the test stage of the Dockerfile, I want to run sanity checks on the image produced in the release stage before publishing the image to the registry.

However, if I run build bake test release --push, the image is built and pushed before the test target has a chance to run because there's a logical dependency between the stages in the Dockerfile which prevents the test target to run before the image is produced and the push happens in parallel.

So what's the proper way to get the targets sequentially in this case? Is that a bug if the push happens before all the targets have finished their execution?

I suppose I can just run build bake test && build bake release --push to force my targets to be run sequentially. But since we can define some group in the bake file to run targets in parallel (which is equivalent to specifying many targets on the command line), i tend to think build bake is missing an equivalent to run targets sequentially, e.g.

sequence "my_workflow" {
  targets = ["test", "release"]
}

What's your opinion about that?

[sprat]

Bump ?