controller: only capture the result when invoked through a controller

This ensures that the code used to capture and evaluated a result is
only executed when built through the controller. Otherwise, no build
result should be recorded.

This ensures that new code added to capture and store the build result
for debugging isn't used when BUILDX_EXPERIMENTAL is not set.

Signed-off-by: Justin Chadwell <me@jedevc.com>

commands/build.go

@@ -211,7 +211,7 @@ func runBuild(dockerCli command.Cli, in buildOptions) error {
 			return errors.Wrap(err, "removing image ID file")
 		}
 	}
-	resp, _, err := cbuild.RunBuild(ctx, dockerCli, opts, os.Stdin, progress, nil)
+	resp, _, err := cbuild.RunBuild(ctx, dockerCli, opts, os.Stdin, progress, nil, false)
 	if err != nil {
 		return err
 	}