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test: detect containerd image store directly in multi-arch error test

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The 'builder does not support multi-arch' subtest expects the docker
driver to reject multi-platform builds, and skipped itself by checking
that buildx lists both linux/amd64 and linux/arm64. That heuristic
misses containerd-store hosts without binfmt emulation (plain CI
runners): only native platforms are listed even though the driver
happily cross-builds, so the build succeeds and the test fails with
'ExitCode was 0 expected 1'. Skip on the containerd image store
directly, detected from the daemon's DriverStatus.

Signed-off-by: Nicolas De Loof <nicolas.deloof@gmail.com>
This commit is contained in:
Nicolas De Loof 2026-08-13 11:36:45 +02:00 • committed by Guillaume Lours
parent c936d76faa
commit bbcd8108b2
1 changed files with 9 additions and 0 deletions
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9
pkg/e2e/build_test.go
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@ -410,6 +410,15 @@ func TestBuildPlatformsStandardErrors(t *testing.T) {
})
t.Run("builder does not support multi-arch", func(t *testing.T) {
// The docker driver supports multi-platform builds whenever the
// daemon uses the containerd image store, so this error won't occur.
// Detect the store directly: the buildx `Platforms:` heuristic below
// misses it on hosts without binfmt emulation, where only native
// platforms are listed even though cross-building works.
info := c.RunDockerCmd(t, "info", "-f", "{{json .DriverStatus}}")
if strings.Contains(info.Stdout(), "io.containerd.snapshotter.v1") {
t.Skip("docker driver supports multi-platform builds (containerd image store enabled)")
}
// Docker Desktop with containerd image store uses the docker driver
// but supports multi-platform builds, so this error won't occur.
inspect := c.RunDockerCmd(t, "buildx", "inspect", "--bootstrap")