initial backend development

backend/Dockerfile

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+# Use official lightweight Python image
+FROM python:3.11-slim
+
+# Set working directory inside container
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y gcc libpq-dev curl && rm -rf /var/lib/apt/lists/*
+
+# Install Python dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Expose port for internal use (not mapped publicly unless via NGINX)
+EXPOSE 8000
+
+# Run the FastAPI app with Uvicorn
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]

backend/docker-compose.override.yml

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+version: '3.8'
+
+services:
+  complycore-api:
+    volumes:
+      - ./backend:/app
+    command: uvicorn main:app --host 0.0.0.0 --port 8000 --reload

backend/main.py

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+from sqlalchemy import create_engine
+from dotenv import load_dotenv
+import os
+
+# Load .env vars
+load_dotenv()
+
+# Get env vars
+USER = os.getenv("user")
+PASSWORD = os.getenv("password")
+HOST = os.getenv("host")
+PORT = os.getenv("port")
+DBNAME = os.getenv("dbname")
+
+# Full SQLAlchemy URI for Session Pooler
+DATABASE_URL = (
+    f"postgresql+psycopg2://{USER}:{PASSWORD}@{HOST}:{PORT}/{DBNAME}?sslmode=require"
+)
+
+# Use NullPool to defer to Supabase's pooler
+from sqlalchemy.pool import NullPool
+engine = create_engine(DATABASE_URL, poolclass=NullPool)
+
+try:
+    with engine.connect() as conn:
+        print("✅ Supabase Session Pooler connection successful.")
+except Exception as e:
+    print(f"❌ Connection failed: {e}")

backend/requirements.txt

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+fastapi==0.110.0
+uvicorn[standard]==0.27.1
+sqlalchemy==2.0.30
+psycopg2-binary==2.9.9
+python-dotenv==1.0.1

docker-compose.yml

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+
+services:
+  complycore-api:
+    build:
+      context: ./backend
+    container_name: complycore-api
+    restart: unless-stopped
+    env_file:
+      - ./backend/.env
+    networks:
+      - internal_only
+    expose:
+      - "8000"
+
+
+networks:
+  internal_only:
+    driver: bridge