Add Docker support with Gunicorn, SQLite volume persistence, and optional PostgreSQL

Co-authored-by: Cursor <cursoragent@cursor.com>

docker-compose.yml

@@ -0,0 +1,53 @@
+services:
+  accounting-backend:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: funzone_accounting_backend
+    ports:
+      - "127.0.0.1:8010:8010"
+    environment:
+      SECRET_KEY: ${SECRET_KEY:-your-super-secret-key-change-in-production}
+      DEBUG: ${DEBUG:-False}
+      ALLOWED_HOSTS: ${ALLOWED_HOSTS:-localhost,127.0.0.1,accounting-backend}
+      CORS_ALLOW_ALL_ORIGINS: ${CORS_ALLOW_ALL_ORIGINS:-True}
+      CORS_ALLOWED_ORIGINS: ${CORS_ALLOWED_ORIGINS:-http://localhost:3006,http://localhost:5176,http://127.0.0.1:3006,http://127.0.0.1:5176}
+      SQLITE_PATH: /data/db.sqlite3
+      DATABASE_URL: ${DATABASE_URL:-}
+      DB_HOST: accounting-db
+      POSTGRES_USER: ${POSTGRES_USER:-accounting_user}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-accounting_password}
+      POSTGRES_DB: ${POSTGRES_DB:-accounting_db}
+    volumes:
+      - accounting_sqlite:/data
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8010/health"]
+      interval: 30s
+      timeout: 10s
+      start_period: 40s
+      retries: 3
+
+  accounting-db:
+    image: postgres:16-alpine
+    container_name: funzone_accounting_postgres
+    profiles:
+      - postgres
+    environment:
+      POSTGRES_DB: ${POSTGRES_DB:-accounting_db}
+      POSTGRES_USER: ${POSTGRES_USER:-accounting_user}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-accounting_password}
+    volumes:
+      - accounting_postgres:/var/lib/postgresql/data
+    ports:
+      - "127.0.0.1:5434:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-accounting_user} -d ${POSTGRES_DB:-accounting_db}"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+
+volumes:
+  accounting_sqlite:
+  accounting_postgres: