refactor: clean up and improve codebase

docker-compose.yaml

@@ -6,7 +6,15 @@ services:
     ports:
       - "3000:3000"
     environment:
-      - REFRESH_TOKEN=
-      - CLIENT_SECRET=
-      - CLIENT_ID=
+      - REFRESH_TOKEN=${REFRESH_TOKEN}
+      - CLIENT_SECRET=${CLIENT_SECRET}
+      - CLIENT_ID=${CLIENT_ID}
       #- LOG_LEVEL=DEBUG
+      # ALLOWED_ORIGINS=http://localhost:3000
+      # SERVER_PORT=3000
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3000/health"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 5s