Refactor application ports to 12000 for backend and 12001 for frontend; update documentation and configuration files accordingly

Co-authored-by: Copilot <copilot@github.com>

backend/Dockerfile

@@ -0,0 +1,22 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    gcc \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements and install Python dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Expose port
+EXPOSE 12000
+
+# Run the application
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "12000"]

backend/app/main.py

@@ -30,7 +30,7 @@ app = FastAPI(
 
 app.add_middleware(
     CORSMiddleware,
-    allow_origins=[os.getenv("CORS_ORIGINS", "http://localhost:5000")],
+    allow_origins=[os.getenv("CORS_ORIGINS", "http://localhost:12001")],
     allow_credentials=True,
     allow_methods=["*"],
     allow_headers=["*"],