Dockerfile

FROM theasp/novnc:latest

# 1. Setup specific environment variables for Spaces
ENV DEBIAN_FRONTEND=noninteractive \
    DISPLAY_WIDTH=1280 \
    DISPLAY_HEIGHT=720 \
    # Spaces requires the web server to be on port 7860
    vnc_port=7860 \
    # Disable the default terminal if you want a cleaner look
    RUN_XTERM=yes \
    RUN_FLUXBOX=yes

# 2. Spaces requires a non-root user (ID 1000)
# The base image uses root, so we need to create the user and fix permissions
RUN useradd -m -u 1000 user && \
    # Fix permissions for the app directory so the new user can run the entrypoint
    chown -R user:user /app && \
    chown -R user:user /usr/share/novnc && \
    # Give the user permission to write to necessary system folders used by the base image
    chmod -R 777 /var/log && \
    chmod -R 777 /var/run

# 3. Modify the internal service configuration to use Port 7860 instead of 8080
# The base image hardcodes 8080 in its supervisor config or entrypoint
RUN sed -i 's/8080/7860/g' /app/supervisord.conf || true && \
    sed -i 's/8080/7860/g' /app/entrypoint.sh || true

# 4. Switch to the new user
USER user
ENV HOME=/home/user
WORKDIR /home/user

# 5. Install your specific app (Example: Firefox)
# Note: We switch to root briefly for installation, then back to user
USER root
RUN apt-get update && apt-get install -y \
    firefox-esr \
    && rm -rf /var/lib/apt/lists/*
USER user

# 6. Expose the correct port
EXPOSE 7860

# 7. Start the container
CMD ["/app/entrypoint.sh"]