Dockerfile

# Use Node.js LTS as base image
FROM node:20-slim

# Set up a new user named "user" with user ID 1000
# Check if user already exists, if not create it
RUN id -u 1000 &>/dev/null || useradd -m -u 1000 user

# Switch to user ID 1000
USER 1000

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

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

# Copy demo package files with correct ownership (use numeric UID)
COPY --chown=1000:1000 demo/package*.json ./

# Install dependencies
RUN npm ci

# Copy the demo application with correct ownership (use numeric UID)
COPY --chown=1000:1000 demo/ .

# Build the application
RUN npm run build

# Expose port 7860 (Hugging Face Spaces default)
EXPOSE 7860

# Run the preview server on port 7860
# Use sh -c to set VITE environment variable to allow all hosts
CMD ["sh", "-c", "VITE_ALLOWED_HOSTS='*' npm run preview -- --host 0.0.0.0 --port 7860"]