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# Copy application
COPY . .

# Generate keys (or mount from volume)
RUN mkdir -p /app/keys && \
    openssl genrsa -out /app/keys/private.pem 2048 && \
    openssl rsa -in /app/keys/private.pem -pubout -out /app/keys/public.pem

# Create non-root user
RUN useradd -m -u 1000 catalyst && \
    chown -R catalyst:catalyst /app

USER catalyst

EXPOSE 5000

CMD ["perl", "app.pl"]
```

### Docker Compose