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email-worker/Dockerfile

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+FROM python:3.11-slim
+
+LABEL maintainer="andreas@knuth.dev"
+LABEL description="Unified multi-domain email worker (modular version)"
+
+# System packages
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Non-root user
+RUN useradd -m -u 1000 worker && \
+    mkdir -p /app /var/log/email-worker /etc/email-worker && \
+    chown -R worker:worker /app /var/log/email-worker /etc/email-worker
+
+# Python dependencies
+COPY requirements.txt /app/
+RUN pip install --no-cache-dir -r /app/requirements.txt
+
+# Worker code (all modules)
+COPY --chown=worker:worker aws/ /app/aws/
+COPY --chown=worker:worker email_processing/ /app/email_processing/
+COPY --chown=worker:worker smtp/ /app/smtp/
+COPY --chown=worker:worker metrics/ /app/metrics/
+COPY --chown=worker:worker *.py /app/
+
+WORKDIR /app
+USER worker
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
+    CMD curl -f http://localhost:8080/health || exit 1
+
+# Unbuffered output
+ENV PYTHONUNBUFFERED=1
+
+CMD ["python3", "main.py"]