Refactor Dockerfile to use multi-stage build

Author: npv2k1

Dockerfile

@@ -1,13 +1,22 @@
-FROM python:3.10.7-slim-buster
+# Stage 1: Build 
+FROM python:3.10.7-slim-buster as builder
 
 WORKDIR /app
 
-RUN mkdir -p /tmp/outputs
-
 COPY requirements.txt .
 
+# Install build dependencies and libraries
 RUN pip install --no-cache-dir -r requirements.txt
 
+
+# Stage 2: Production
+FROM python:3.10.7-slim-buster as production
+
+WORKDIR /app
+
 COPY . .
 
+# Copy only the compiled result from previous stage
+COPY --from=builder /app .
+
 CMD ["python", "main.py"]