Spaces:
Sleeping
Sleeping
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# syntax=docker/dockerfile:1.4
# --- Stage 1: Builder ---------------------------------------------------------
FROM python:3.11-slim AS builder
ENV PYTHONDONTWRITEBYTECODE=1 \
PYTHONUNBUFFERED=1 \
PIP_NO_CACHE_DIR=1
WORKDIR /app
# Install deps once and build wheels for a reproducible, cacheable layer
COPY requirements.txt .
RUN pip wheel --no-cache-dir --wheel-dir /app/wheels -r requirements.txt
# --- Stage 2: Final Image -----------------------------------------------------
FROM python:3.11-slim
ENV PYTHONDONTWRITEBYTECODE=1 \
PYTHONUNBUFFERED=1 \
# Platforms like HF Spaces set PORT at runtime; default to 7860 for local
PORT=7860
WORKDIR /app
# Minimal runtime deps (TLS certs for HTTPS calls, etc.)
RUN apt-get update \
&& apt-get install -y --no-install-recommends ca-certificates \
&& rm -rf /var/lib/apt/lists/*
# Install prebuilt wheels
COPY --from=builder /app/wheels /wheels
COPY --from=builder /app/requirements.txt .
RUN pip install --no-cache-dir /wheels/*
# Copy app source
COPY . .
# Non-root for security
RUN useradd --create-home --shell /bin/bash appuser \
&& chown -R appuser:appuser /app
USER appuser
# --- Ports commonly used with A2A agents -------------------------------------
# NOTE: EXPOSE is documentation; publishing happens via `-p host:container`.
# 443 → Recommended prod HTTPS port (JSON-RPC /rpc and websockets on TLS)
# 80 → HTTP (typically only to redirect → 443 behind a reverse proxy)
# 8080 → Very common app / agent port for /rpc during dev/staging
# 8000 → Uvicorn/Gunicorn defaults (also used in many Python stacks)
# 7860 → Popular in ML tooling & Hugging Face Spaces (default UI port here)
# 5000 → Flask default (frequent in prototypes and simple agents)
# 3000 → Node dev servers / proxy frontends around agents
# 8443 → Alternate TLS port (used in some k8s/ingress setups)
EXPOSE 443
EXPOSE 80
EXPOSE 8080
EXPOSE 8000
EXPOSE 7860
EXPOSE 5000
EXPOSE 3000
EXPOSE 8443
# --- Start command ------------------------------------------------------------
# Use shell form so ${PORT} expands at runtime (important on HF Spaces).
# --host 0.0.0.0 allows external connections
# --proxy-headers plays nice behind reverse proxies
CMD ["sh", "-c", "uvicorn app.main:app --host 0.0.0.0 --port ${PORT:-7860} --proxy-headers"]
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