Added Dockerfile

Dockerfile

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+FROM python:3.12
+WORKDIR /usr/local/app
+
+# Install the application dependencies
+COPY requirements.txt ./
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy in the source code
+COPY src ./src
+EXPOSE 5000
+
+# Setup an app user so the container doesn't run as the root user
+RUN useradd app
+USER app
+
+CMD ["flask", "--app", "build", "run"]

requirements.txt

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+blinker==1.9.0
+click==8.1.8
+Flask==3.1.0
+importlib_metadata==8.6.1
+itsdangerous==2.2.0
+Jinja2==3.1.5
+Markdown==3.7
+MarkupSafe==3.0.2
+PyYAML==6.0.2
+Werkzeug==3.1.3
+zipp==3.21.0