Dockerfile

# Dockerfile for Google Cloud Run
# Builds both React frontend and Python backend in a single container

# Stage 1: Build React frontend
FROM node:20-slim AS frontend-builder

WORKDIR /app/frontend

# Firebase config build args (public values, baked into JS bundle by Vite)
ARG VITE_FIREBASE_API_KEY
ARG VITE_FIREBASE_AUTH_DOMAIN
ARG VITE_FIREBASE_PROJECT_ID
ARG VITE_FIREBASE_STORAGE_BUCKET
ARG VITE_FIREBASE_MESSAGING_SENDER_ID
ARG VITE_FIREBASE_APP_ID

# Copy package files
COPY frontend/package*.json ./

# Install dependencies
RUN npm ci

# Copy frontend source
COPY frontend/ ./

# Build production bundle (Vite reads VITE_* from env at build time)
RUN npm run build

# Stage 2: Python runtime
FROM python:3.10-slim

# Set working directory
WORKDIR /app

# Install system dependencies
# Note: pillow-heif bundles its own libheif, no system package needed
# Using libgl1 (not libgl1-mesa-glx) for newer Debian versions
RUN apt-get update && apt-get install -y --no-install-recommends \
    libgl1 \
    libglib2.0-0 \
    && rm -rf /var/lib/apt/lists/*

# Copy Python requirements
COPY backend/requirements.txt ./

# Install Python dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Pre-download CLIP model during build (caches in image)
RUN python -c "from transformers import CLIPModel, CLIPProcessor; \
    CLIPModel.from_pretrained('openai/clip-vit-base-patch32'); \
    CLIPProcessor.from_pretrained('openai/clip-vit-base-patch32'); \
    print('✅ CLIP model pre-downloaded')"

# Copy backend source
COPY backend/app ./app
COPY backend/reference_art ./reference_art

# Copy built frontend from previous stage
COPY --from=frontend-builder /app/frontend/dist ./frontend/dist

# Set environment variables
ENV PYTHONUNBUFFERED=1 \
    PORT=8080

# Expose port (Cloud Run uses 8080 by default)
EXPOSE 8080

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8080/api/health')" || exit 1

# Run the application - Cloud Run sets PORT env variable
CMD ["sh", "-c", "uvicorn app.main:app --host 0.0.0.0 --port ${PORT:-8080}"]