FROM node:20-alpine

# 1. Set environment variables for Hugging Face and Puppeteer
ENV PORT=7860
ENV PUPPETEER_SKIP_DOWNLOAD=true
ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium-browser

# 2. Define standard Flowise paths 
# Using /data as the base path allows for easy persistent storage mapping in Hugging Face
ENV FLOWISE_PATH=/usr/local/lib/node_modules/flowise
ENV BASE_PATH=/data
ENV DATABASE_PATH=$BASE_PATH
ENV SECRETKEY_PATH=$BASE_PATH
ENV LOG_PATH=$BASE_PATH/logs
ENV BLOB_STORAGE_PATH=$BASE_PATH/storage

USER root

# 3. Install necessary system dependencies
RUN apk add --no-cache git python3 py3-pip make g++ build-base cairo-dev pango-dev chromium

# 4. Install Flowise globally
RUN npm install -g flowise

# 5. Create directories and set permissions
# 777 permissions are often necessary in containerized cloud environments to prevent read/write errors
RUN mkdir -p $LOG_PATH $FLOWISE_PATH/uploads $BASE_PATH && \
    chmod -R 777 $LOG_PATH $FLOWISE_PATH $BASE_PATH

# 6. Set working directory and expose the required port
WORKDIR /data
EXPOSE 7860

# 7. Start the application
CMD ["npx", "flowise", "start"]