Dockerfile

# Use the official Python image from the Docker Hub
FROM python:3.9

# Create a non-root user and switch to it
RUN useradd -m -u 1000 user
USER user

# Set the PATH to include user's local binary directory
ENV PATH="/home/user/.local/bin:$PATH"

# Set the working directory in the container
WORKDIR /app

# Copy the requirements.txt and install dependencies as the user
COPY --chown=user ./requirements.txt requirements.txt
RUN pip install --no-cache-dir --upgrade -r requirements.txt

# Copy the rest of the application code into the container as the user
COPY --chown=user . /app

# Command to run the Flask app using Python
CMD ["python", "app.py"]