Dockerfile

# Use an official Python slim image for the base
FROM python:3.10-slim

# Set the working directory
WORKDIR /app

# Install dependencies: wget, unzip, and Python pip
RUN apt-get update && apt-get install -y \
    wget \
    apt-transport-https \
    gnupg2 \
    unzip \
    python3-pip \
    && rm -rf /var/lib/apt/lists/*

# Download and install Roslyn
RUN wget https://github.com/dotnet/roslyn/releases/download/v4.0.1/roslyn.zip \
    && unzip roslyn.zip -d /usr/local/roslyn \
    && rm roslyn.zip

# Set the PATH for the Roslyn compiler
ENV PATH="/usr/local/roslyn/Microsoft.Net.Compilers.4.0.1/tools:${PATH}"

# Create a non-root user and set it as the user for the rest of the image
RUN useradd -ms /bin/bash appuser

# Ensure the /app directory is owned by the non-root user
RUN chown -R appuser:appuser /app

# Switch to the non-root user
USER appuser

# Create necessary directories and set permissions
RUN mkdir -p /app/uploads /home/appuser/.mono && \
    chmod -R 777 /app/uploads /home/appuser/.mono

# Set the MONO_HOME environment variable
ENV MONO_HOME="/home/appuser/.mono"
# Add the Mono tools directory to PATH
ENV PATH="${PATH}:${MONO_HOME}/bin:/usr/bin"

# Verify that csc is installed
RUN which csc

# Copy the requirements file with the correct owner
COPY --chown=appuser:appuser ./requirements.txt /app/requirements.txt

# Install Python dependencies
RUN pip3 install --no-cache-dir --upgrade -r /app/requirements.txt

# Copy the Flask app files
COPY --chown=appuser:appuser . .

# Expose the port the app runs on
EXPOSE 7860

# Command to run the Flask app
CMD ["python3", "main.py"]