feat: add Docker support and update Python version to 3.11

pyproject.toml

@@ -0,0 +1,43 @@
+[project]
+name = "fulfillment-backend"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+requires-python = ">=3.11"
+dependencies = [
+    "aiohttp[speedups]>=3.11.16",
+    "aiokafka>=0.12.0",
+    "aioshutil>=1.5",
+    "alembic>=1.16.5",
+    "asyncpg>=0.30.0",
+    "celery[redis]>=5.5.3",
+    "fastapi>=0.116.1",
+    "fpdf>=1.7.2",
+    "gunicorn>=23.0.0",
+    "jinja2>=3.1.6",
+    "lexorank-py>=0.1.1",
+    "number-to-string>=1.0.3",
+    "openpyxl==3.0.10",
+    "pdfrw>=0.4",
+    "pydantic>=2.11.7",
+    "pyjwt>=2.10.1",
+    "pymupdf>=1.26.4",
+    "python-dotenv>=1.1.1",
+    "python-jose[cryptography]>=3.5.0",
+    "python-multipart>=0.0.20",
+    "reportlab>=4.4.3",
+    "reportlab-qrcode>=0.1.6",
+    "requests>=2.32.5",
+    "sqlalchemy[asyncio]>=2.0.43",
+    "svglib>=1.5.1",
+    "uvicorn[standard]>=0.35.0",
+    "weasyprint>=66.0",
+    "starlette>=0.47.3",
+    "redis[hiredis]>=5.2.1",
+    "typing-extensions>=4.15.0",
+]
+
+[dependency-groups]
+dev = [
+    "deptry>=0.23.1",
+]