Dockerfile

# 1. Start with the official Python 3.12 slim base image
FROM python:3.12-slim

# 2. Set the working directory inside the container
WORKDIR /app

# 3. Install system dependencies
# This step updates the package lists and installs FluidSynth
RUN apt-get update && apt-get install -y fluidsynth && \
    # Clean up the apt cache to keep the image size small
    rm -rf /var/lib/apt/lists/*

# 4. Copy the requirements file
COPY requirements.txt .

# 5. Install Python packages
# --no-cache-dir ensures we don't store the download cache, keeping the image small
RUN pip install --no-cache-dir -r requirements.txt

# 6. Copy all your application files (app.py, README.md, etc.)
# IMPORTANT: You must have 'timbres_of_heaven.sf2' in this directory
# when you build the image so it gets copied too!
COPY . .

# 7. Expose the default Gradio port
EXPOSE 7860

# 8. Define the command to run your application
# We will modify app.py to listen on 0.0.0.0
CMD ["python", "app.py"]