Slimming down

Dockerfile

@@ -1,13 +1,37 @@
+# Multi-stage build for efficient container size
+# Stage 1: Builder with all compilation dependencies
+FROM python:3.13-slim as builder
+
+# Install build dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    gcc \
+    g++ \
+    make \
+    build-essential \
+    cargo \
+    rustc \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set working directory
+WORKDIR /app
+
+# Copy requirements and install Python dependencies
+COPY requirements.txt .
+RUN pip install --user --no-cache-dir -r requirements.txt
+
+# Stage 2: Final lightweight image
 FROM python:3.13-slim
 
 # Set environment variables
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \
-    TZ=Europe/Berlin
+    TZ=Europe/Berlin \
+    PATH=/root/.local/bin:$PATH
 
-# Install minimal dependencies
+# Install only runtime dependencies
 RUN apt-get update && apt-get install -y --no-install-recommends \
     tzdata \
+    curl \
     && rm -rf /var/lib/apt/lists/* \
     && ln -snf /usr/share/zoneinfo/$TZ /etc/localtime \
     && echo $TZ > /etc/timezone
@@ -15,11 +39,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 # Set working directory
 WORKDIR /app
 
-# Copy dependency files
-COPY requirements.txt ./
-
-# Install Python dependencies using pip (simpler for container)
-RUN pip install --no-cache-dir -r requirements.txt
+# Copy Python packages from builder
+COPY --from=builder /root/.local /root/.local
 
 # Copy application files
 COPY main.py .