Dockerfile

# Use a Python image 
FROM python:3.12-slim

# Create a new user named "user" with user ID 1000
RUN useradd -m -u 1000 user

# Switch to the "user" user for the remainder of the build
USER user

# Set home to the user's home directory and update PATH accordingly
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

# Set the working directory to the user's home directory
WORKDIR $HOME/app

# Upgrade pip (as non-root) to avoid permission issues
RUN pip install --no-cache-dir --upgrade pip

# Copy the requirements file (with the correct ownership) to leverage Docker cache
COPY --chown=user requirements.txt $HOME/app/requirements.txt

# Install Python dependencies
RUN pip install -r requirements.txt

# Copy the rest of the application code into the container (with proper ownership)
COPY --chown=user . $HOME/app

# (Optional) If you need to download a checkpoint or other assets:
# RUN mkdir -p content
# ADD --chown=user https://<SOME_ASSET_URL> content/<SOME_ASSET_NAME>

# Expose port 7860 (Hugging Face Spaces expects your app to listen on this port)
EXPOSE 7860

# Command to run the FastAPI app using uvicorn.
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]