docker ready deployment

app/Dockerfile

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+FROM python:3.12-slim
+
+WORKDIR /src
+
+# Install dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy the entire project
+COPY . ./app/
+
+# Expose Gunicorn port
+EXPOSE 8000
+
+# Gunicorn command for a package structure
+# "app:create_app()" assumes you have a factory function in __init__.py
+# If your Flask instance is just named 'app' inside __init__.py, use "app:app"
+CMD ["gunicorn", "--preload", "-w", "4", "-b", "0.0.0.0:8000", "app:create_app()"]