DockerFile

# Use the official Python 3.12 image as the base image
FROM python:3.12

# Set the working directory in the container
WORKDIR /app

# Copy the requirements.txt file to the container
COPY requirements.txt .

# Install the Python dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Copy the application code to the container
COPY . .

# Create a user and map the user ID to the environment variables PUID and GUID if specified
ARG PUID
ARG GUID
RUN if [ -n "$PUID" ] && [ -n "$GUID" ]; then \
        groupadd -g $GUID appuser && \
        useradd -u $PUID -g $GUID -s /bin/bash -m appuser; \
    else \
        useradd -ms /bin/bash appuser; \
    fi

# Set the ownership of the application directory to the appuser
RUN chown -R appuser:appuser /app

# Switch to the appuser
USER appuser

# Expose the port on which the Flask application will run
EXPOSE 5000

# Set the environment variable for Flask
ENV FLASK_APP=app.py

# Run the Flask application
CMD ["flask", "run", "--host=0.0.0.0"]