`compose up --build` populates BuildOptions.Deps=true so the initial
startup also builds images for depends_on services. The watch rebuild
path reused the same BuildOptions pointer, only resetting Build.Services
to the watched service. Build.Deps stayed true, so s.build() switched
back to IncludeDependencies and rebuilt the upstream dependency too.
Fix it by working on a local copy of BuildOptions in rebuild() and
explicitly setting Deps=false. Using a local copy also removes the data
race on the shared pointer when concurrent file events fire.
Also fix a related leak in doBuildBake: the loop populating bake
configuration iterates over every service in the project (needed so
additional_contexts: service:xxx references can resolve), but it was
emitting the "Image X Building" progress event and tracking expected
images for services that were not part of serviceToBeBuild. Filter
those side-effects to the actual build set so the watch rebuild log
shows only the watched service.
Adds an e2e test reproducing the bug.
Fixes#13853
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Signed-off-by: Nicolas De Loof <nicolas.deloof@gmail.com>
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