Suppress extensive verbose output

Author: rizwanreza

internal/test/container.go

@@ -167,17 +167,17 @@ func runTest(ctx context.Context, logger *log.Logger, w io.Writer, dockerDaemon
 	}
 
 	resp, err := dockerDaemon.ImageBuild(ctx, &dockerfileTarball, build.ImageBuildOptions{
-		Tags:        []string{"kiln_test_dependencies:vmware"},
-		BuildArgs:   buildArgs,
-		AuthConfigs: authConfigs,
+		Tags:           []string{"kiln_test_dependencies:vmware"},
+		BuildArgs:      buildArgs,
+		AuthConfigs:    authConfigs,
+		SuppressOutput: true,
 	})
 
 	if err != nil {
 		return fmt.Errorf("failed to build image: %w", err)
 	}
 
-	logger.Println("reading image build response")
-	if err := checkImageBuildResponse(resp.Body, w); err != nil {
+	if err := checkImageBuildResponse(resp.Body, nil); err != nil {
 		return fmt.Errorf("image build failed: %w", err)
 	}
 
@@ -421,9 +421,9 @@ type imageBuildMessage struct {
 	} `json:"errorDetail"`
 }
 
-// checkImageBuildResponse reads the Docker/Podman image-build JSON stream. It
-// copies "stream" lines to logOutput (when non-nil) so RUN step logs (e.g. go
-// install failures) are visible; it returns an error if the daemon reports failure.
+// checkImageBuildResponse reads the Docker/Podman image-build JSON stream. If
+// logOutput is non-nil, "stream" lines are copied there; otherwise they are
+// discarded. Build failures are still returned from daemon "error" messages.
 func checkImageBuildResponse(body io.ReadCloser, logOutput io.Writer) error {
 	defer func() {
 		_ = body.Close()