test: Use daemon OS instead of runtime OS in PullNever test

This fixes test failures on Windows runners running Linux containers.
The test was using runtime.GOOS which returns 'windows' on Windows hosts,
but the Docker daemon may be running Linux containers. Now we use the
daemon's actual OS type queried via docker.Info().

Signed-off-by: Juan Bustamante <bustamantejj@gmail.com>

Author: jjbustamante

pkg/image/fetcher_test.go

@@ -741,8 +741,10 @@ func testFetcher(t *testing.T, when spec.G, it spec.S) {
 				localImageName = "pack.local/test-" + h.RandString(10)
 
 				// Create a local daemon image with platform information
+				// Use osType (daemon OS) instead of runtime.GOOS to handle cases where
+				// Windows runner is running Linux containers
 				img, err := local.NewImage(localImageName, docker, local.WithDefaultPlatform(imgutil.Platform{
-					OS:           runtime.GOOS,
+					OS:           osType,
 					Architecture: runtime.GOARCH,
 				}))
 				h.AssertNil(t, err)
@@ -755,7 +757,7 @@ func testFetcher(t *testing.T, when spec.G, it spec.S) {
 
 			it("skips platform-specific digest resolution and uses tag directly", func() {
 				target := dist.Target{
-					OS:   runtime.GOOS,
+					OS:   osType,
 					Arch: runtime.GOARCH,
 				}