@@ -2563,6 +2563,10 @@ func TestBuildConditionalCache(t *testing.T) {

 	ctx, err := fakeContext(dockerfile, map[string]string{

 		"foo": "hello",

 	})

+	if err != nil {

+		t.Fatal(err)

+	}

+	defer ctx.Close()

 	id1, err := buildImageFromContext(name, ctx, true)

 	if err != nil {

@@ -3453,6 +3457,8 @@ func TestBuildDockerignoringDockerfile(t *testing.T) {

 	if err != nil {

 		t.Fatal(err)

 	}

+	defer ctx.Close()

+

 	if _, err = buildImageFromContext(name, ctx, true); err != nil {

 		t.Fatalf("Didn't ignore Dockerfile correctly:%s", err)

 	}

@@ -3483,6 +3489,8 @@ func TestBuildDockerignoringRenamedDockerfile(t *testing.T) {

 	if err != nil {

 		t.Fatal(err)

 	}

+	defer ctx.Close()

+

 	if _, err = buildImageFromContext(name, ctx, true); err != nil {

 		t.Fatalf("Didn't ignore MyDockerfile correctly:%s", err)

 	}

@@ -3803,6 +3811,8 @@ RUN    [ "$abc" = "\\\"foo\\\"" ]

 	if err != nil {

 		t.Fatal(err)

 	}

+	defer ctx.Close()

+

 	_, err = buildImageFromContext(name, ctx, true)

 	if err != nil {

 		t.Fatal(err)