temp rebase later

build.gradle

@@ -36,7 +36,8 @@ dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
 	implementation 'org.springframework.boot:spring-boot-starter-web'
 	implementation 'org.springframework.boot:spring-boot-starter-validation'
-	implementation 'com.h2database:h2' // TODO: Use it in test while use postgres in production
+//	implementation 'com.h2database:h2' // TODO: Use it in test while use postgres in production
+	runtimeOnly 'org.postgresql:postgresql'
 	implementation "org.springframework.boot:spring-boot-starter-security"
 	implementation 'io.jsonwebtoken:jjwt-api:0.12.6'
 	implementation "com.google.guava:guava:33.3.1-jre"

docker-compose.yml

@@ -0,0 +1,9 @@
+services:
+  postgres:
+    image: postgres:17.2-alpine
+    environment:
+      - POSTGRES_USER=admin
+      - POSTGRES_PASSWORD=password
+      - POSTGRES_DB=db
+    ports:
+      - "5432:5432"

src/main/resources/application.properties

@@ -1,3 +1,7 @@
 spring.application.name=spring-simple-backend
+spring.datasource.url=jdbc:postgresql://${POSTGRES_URL:localhost}:${POSTGRES_PORT:5432}/${POSTGRES_DB:db}
+spring.datasource.username=${POSTGRES_USER:admin}
+spring.datasource.password=${POSTGRES_PASSWORD:password}
+spring.datasource.driver-class-name=org.postgresql.Driver
 jwt.hs256Key=${JWT_HS256_KEY:your-default-key-1234567890abcdef}
 jwt.expiredDuration=1h