Create Dockerfile

Dockerfile

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+# Base Image: Python ka lightweight version
+FROM python:3.9-slim
+
+# System Libraries install kar rahay hain (CairoSVG aur Graphics ke liye zaroori)
+RUN apt-get update && apt-get install -y \
+    libcairo2 \
+    libpango-1.0-0 \
+    libpangocairo-1.0-0 \
+    libgdk-pixbuf2.0-0 \
+    libffi-dev \
+    shared-mime-info \
+    && rm -rf /var/lib/apt/lists/*
+
+# Working Directory set karna
+WORKDIR /app
+
+# Requirements copy aur install
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# App code copy
+COPY app.py .
+
+# Port expose (Flask 5000 par chalega)
+EXPOSE 5000
+
+# Gunicorn server start (Production ready speed)
+CMD ["gunicorn", "-w", "2", "-b", "0.0.0.0:5000", "app:app"]