Initial commit: Flask ASCII art generator

Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install Flask
+RUN pip install --no-cache-dir flask
+
+# Copy the app
+COPY app.py .
+
+# Expose port
+EXPOSE 5000
+
+# Run the app
+CMD ["python", "app.py"]