Serve compiled front from the same application

also add embedded build for production

internal/apitest/get_read_user_book_test.go

@@ -73,12 +73,12 @@ func TestGetReadBooksHandler_CheckOneBook(t *testing.T) {
 			Author:    "Truman Capote",
 			Rating:    6,
 			Read:      true,
-			CoverPath: "/bookcover/desangfroid.jpg",
+			CoverPath: "/static/bookcover/desangfroid.jpg",
 		}, book)
 }
 
 func testGetReadBooksHandler(t *testing.T, router *gin.Engine, userToken string, expectedCode int, limit string, offset string) dto.BookUserGet {
-	u, err := url.Parse("/mybooks/read")
+	u, err := url.Parse("/ws/mybooks/read")
 	if err != nil {
 		t.Error(err)
 	}