Merge pull request #53 from Louie-03/BE-feature-cors_bug_fix

[BE] 도메인 설정으로 CORS 문제 해결

BE/src/main/java/sidedish/com/config/WebConfig.java

@@ -13,8 +13,9 @@ public void addCorsMappings(CorsRegistry registry) {
 		Map<String, String> envs = System.getenv();
 		String awsIp = "http://" + envs.get("AWS_IP");
 		String localIp = "http://" + envs.get("LOCAL_IP");
+		String dnsName = envs.get("DNS_NAME");
 
 		registry.addMapping("/**")
-			.allowedOrigins(localIp, awsIp);
+			.allowedOrigins(localIp, awsIp, dnsName);
 	}
 }