first commit

Machine-Backend/Dockerfile

@@ -1,23 +1,35 @@
-# Backend Dockerfile
-FROM python:3.10-slim
+# syntax=docker/dockerfile:1.4
+# Builder stage: compile dependencies
+FROM --platform=$BUILDPLATFORM python:3.10-alpine AS builder
 
 WORKDIR /app
 
-# Install system dependencies (for mysqlclient or pymysql)
-RUN apt-get update && apt-get install -y gcc python3-dev default-libmysqlclient-dev && rm -rf /var/lib/apt/lists/*
+# Install build dependencies
+RUN apk add --no-cache gcc musl-dev python3-dev mariadb-dev libffi-dev openssl-dev
 
-# Copy dependencies
-COPY requirements.txt ./
-RUN pip install --no-cache-dir -r requirements.txt
+# Copy requirements and install
+COPY requirements.txt .
+RUN pip install --no-cache-dir --prefix=/install -r requirements.txt
 
-# Copy project files
+# Copy application code
 COPY . .
 
-# Expose Flask port
+# Final stage: minimal runtime image
+FROM python:3.10-alpine AS final
+
+WORKDIR /app
+
+# Copy installed packages from builder
+COPY --from=builder /install /usr/local
+# Copy app code
+COPY --from=builder /app /app
+
+# Set production environment variables
+ENV FLASK_ENV=production
+ENV FLASK_APP=run.py
+ENV FLASK_RUN_HOST=0.0.0.0
+ENV FLASK_RUN_PORT=5000
+
 EXPOSE 5000
 
-# Environment (set via docker-compose)
-ENV FLASK_ENV=production
-
-# Start the Flask app
-CMD ["python", "run.py"]
+CMD ["flask", "run"]