Dockerfile

# ──────────────────────────────────────────────────────────────────────────────
# Stage 1: builder — install Python dependencies into /install prefix
# This layer is cached as long as requirements.txt doesn't change.
# ──────────────────────────────────────────────────────────────────────────────
FROM python:3.11-slim-bookworm AS builder

WORKDIR /build

COPY requirements.txt ./
RUN pip install --no-cache-dir --prefix=/install -r requirements.txt


# ──────────────────────────────────────────────────────────────────────────────
# Stage 2: base — OS deps + Python packages + Chromium (all slow, all cached)
# Rebuilt only when requirements.txt or system packages change.
# ──────────────────────────────────────────────────────────────────────────────
FROM python:3.11-slim-bookworm AS base

# System dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
        ffmpeg \
        curl \
        yt-dlp \
    && rm -rf /var/lib/apt/lists/*

# Python packages from builder
COPY --from=builder /install /usr/local

# Playwright + Chromium (~300 MB, cached until playwright version changes)
RUN playwright install chromium --with-deps

ENV PLAYWRIGHT_BROWSERS_PATH=/root/.cache/ms-playwright


# ──────────────────────────────────────────────────────────────────────────────
# Stage 3: runtime — only application code (fast, rebuilds in seconds)
# ──────────────────────────────────────────────────────────────────────────────
FROM base AS runtime

WORKDIR /app

# Application code — only this layer changes on every deploy
COPY sberjazz/ ./sberjazz/
COPY ui/       ./ui/

ENV DOCKER_ENV=1 \
    BROWSER_HEADLESS=true \
    UI_HOST=0.0.0.0 \
    UI_PORT=8765 \
    PLAYWRIGHT_BROWSERS_PATH=/root/.cache/ms-playwright \
    PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1

EXPOSE 8765

HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD curl -f http://localhost:8765/api/status || exit 1

CMD ["python", "ui/server.py"]