@@ -2293,6 +2293,27 @@ func TestBuildExposeOrder(t *testing.T) {

 	logDone("build - expose order")

 }

+func TestBuildExposeUpperCaseProto(t *testing.T) {

+	name := "testbuildexposeuppercaseproto"

+	expected := "map[5678/udp:map[]]"

+	defer deleteImages(name)

+	_, err := buildImage(name,

+		`FROM scratch

+        EXPOSE 5678/UDP`,

+		true)

+	if err != nil {

+		t.Fatal(err)

+	}

+	res, err := inspectField(name, "Config.ExposedPorts")

+	if err != nil {

+		t.Fatal(err)

+	}

+	if res != expected {

+		t.Fatalf("Exposed ports %s, expected %s", res, expected)

+	}

+	logDone("build - expose port with upper case proto")

+}

+

 func TestBuildEmptyEntrypointInheritance(t *testing.T) {

 	name := "testbuildentrypointinheritance"

 	name2 := "testbuildentrypointinheritance2"