Dockerfile

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

# Create a new user with the username 'user' and a user ID of 1000
RUN useradd -m -u 1000 user

# Switch to the new user
USER user

# Set an environment variable to add the local bin directory to the PATH
ENV PATH="/home/user/.local/bin:$PATH"

# Set the working directory inside the container to /app
WORKDIR /app

# Copy the requirements.txt file into the container, changing ownership to 'user'
COPY --chown=user ./requirements.txt requirements.txt

# Install the dependencies listed in requirements.txt
RUN pip install --no-cache-dir --upgrade -r requirements.txt

# Copy the rest of the application code into the container, changing ownership to 'user'
COPY --chown=user . /app

# Set the Flask environment variables
ENV FLASK_APP=app.py
ENV FLASK_RUN_HOST=0.0.0.0
ENV FLASK_RUN_PORT=7860

# Specify the command to run the Flask application
CMD ["flask", "run"]