feat: add db configuration

docker-compose.yml

@@ -0,0 +1,17 @@
+version: "3.8"
+
+services:
+  postgres:
+    image: postgres:15-alpine
+    container_name: bankcards-postgres
+    environment:
+      POSTGRES_DB: bankcards
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+
+volumes:
+  postgres_data:

src/main/resources/application.yml

@@ -0,0 +1,11 @@
+spring:
+  datasource:
+    url: jdbc:postgresql://localhost:5432/bankcards
+    username: postgres
+    password: postgres
+  jpa:
+    hibernate:
+      ddl-auto: validate
+
+server:
+  port: 8080