Merge pull request #80 from SWEET-DEVELOPERS/feature/#79-room

[fix] 선물방 이미지 default값 추가

src/main/java/org/sopt/sweet/domain/room/entity/Room.java

@@ -18,6 +18,7 @@
 public class Room extends BaseTimeEntity {
 
     private static final int DEFAULT_NUMBER = 1;
+    private static final String DEFAULT_IMAGE_URL = "https://sweet-gift-bucket.s3.ap-northeast-2.amazonaws.com/sweet.png";
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -49,7 +50,7 @@ public class Room extends BaseTimeEntity {
     @Builder
     public Room(String gifteeName, String imageUrl, LocalDateTime deliveryDate, LocalDateTime tournamentStartDate, TournamentDuration tournamentDuration, String invitationCode, Member host) {
         this.gifteeName = gifteeName;
-        this.imageUrl = imageUrl;
+        this.imageUrl = DEFAULT_IMAGE_URL;
         this.gifterNumber = DEFAULT_NUMBER;
         this.deliveryDate = deliveryDate;
         this.tournamentStartDate = tournamentStartDate;