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FROM python:3.11-slim
# ── System deps ───────────────────────────────────────────────────────────────
# curl — healthcheck only (no ffmpeg needed without download feature)
RUN apt-get update && apt-get install -y --no-install-recommends \
curl \
&& rm -rf /var/lib/apt/lists/*
# ── Working directory ─────────────────────────────────────────────────────────
WORKDIR /app
# ── Python deps — separate layer so code changes don't bust the cache ─────────
COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade pip \
&& pip install --no-cache-dir -r requirements.txt
# ── App code ──────────────────────────────────────────────────────────────────
COPY app.py ./
# ── Ensure tmp dirs exist and are writable ────────────────────────────────────
RUN mkdir -p /tmp/ytm_cache \
&& chmod -R 777 /tmp/ytm_cache
# ── Hugging Face Spaces runs as a non-root user ───────────────────────────────
RUN chmod -R 755 /app
# ── Expose port 7860 (required by HF Spaces) ─────────────────────────────────
EXPOSE 7860
# ── Health check ──────────────────────────────────────────────────────────────
HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 \
CMD curl -f http://localhost:7860/health || exit 1
# ── Start server ──────────────────────────────────────────────────────────────
# Single worker: in-memory chart cache (_cache_charts) is process-local.
# With 1 worker all requests share the same 10-hour chart cache.
# Disk cache (diskcache) provides durability across restarts.
# uvloop + httptools come in via uvicorn[standard].
CMD ["uvicorn", "app:app", \
"--host", "0.0.0.0", \
"--port", "7860", \
"--workers", "1", \
"--loop", "uvloop", \
"--http", "httptools", \
"--timeout-keep-alive", "120", \
"--access-log"]
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