[add]: Database connection and migrations

docker-compose.yml

@@ -1,11 +1,36 @@
+version: '3.8'
+
 services:
-  digifi-flaska002:
+  db:
+    image: postgres:13
+    environment:
+      - POSTGRES_USER=${DATABASE_USER}
+      - POSTGRES_PASSWORD=${DATABASE_PASSWORD}
+      - POSTGRES_DB=${DATABASE_NAME}
+    ports:
+      - "${DATABASE_PORT}:${DATABASE_PORT}"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${DATABASE_USER} -d ${DATABASE_NAME}"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+
+  digifi-bank-to-product-core:
     build: .
     ports:
-      - "4500:5000"
+      - "${APP_PORT:-4500}:5000"
     environment:
-      - FLASK_APP=app.py
-      - FLASK_RUN_HOST=0.0.0.0
+      - FLASK_APP=wsgi.py
+      - FLASK_ENV=development
+      - DATABASE_URL=postgresql+psycopg2://${DATABASE_USER}:${DATABASE_PASSWORD}@db:${DATABASE_PORT}/${DATABASE_NAME}?options=-csearch_path%3Dflask_app
     volumes:
       - .:/app
+    depends_on:
+      db:
+        condition: service_healthy
     restart: always
+
+volumes:
+  postgres_data: