[BE] issue102: Mysql 위한 인스턴스 생성 및 세팅

backend/build.gradle

@@ -40,6 +40,7 @@ dependencies {
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testImplementation 'io.rest-assured:rest-assured'
     runtimeOnly 'com.h2database:h2'
+    runtimeOnly 'mysql:mysql-connector-java'
 
     // querydsl
     implementation "com.querydsl:querydsl-jpa:${queryDslVersion}"

backend/src/main/resources/application.yml

@@ -9,9 +9,9 @@ spring:
       hibernate:
         dialect: org.hibernate.dialect.MySQL8Dialect
   datasource:
-    driver-class-name: org.h2.Driver
-    username: sa
-    password:
-    url: jdbc:h2:mem:~/moamoa;MODE=MYSQL
+    driver-class-name: com.mysql.cj.jdbc.Driver
+    username: ${USERNAME}
+    password: ${PASSWORD}
+    url: ${MYSQL}
   profiles:
     include: security

backend/src/test/resources/application.yml

@@ -0,0 +1,17 @@
+spring:
+  sql:
+    init:
+      mode: always
+  jpa:
+    hibernate:
+      ddl-auto: none
+    properties:
+      hibernate:
+        dialect: org.hibernate.dialect.MySQL8Dialect
+  datasource:
+    driver-class-name: org.h2.Driver
+    username: sa
+    password:
+    url: jdbc:h2:mem:~/moamoa;MODE=MYSQL
+  profiles:
+    include: security