wehub-resource-sync
117 lines
5.0 KiB
Docker
117 lines
5.0 KiB
Docker
# Backend Dockerfile — multi-stage build
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# Stage 1 (builder): compiles native Python extensions with build-essential
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# Stage 2 (dev): retains toolchain for dev containers (uv sync at startup)
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# Stage 3 (runtime): clean image without compiler toolchain for production
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# UV source image (override for restricted networks that cannot reach ghcr.io)
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ARG UV_IMAGE=ghcr.io/astral-sh/uv:0.7.20
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FROM ${UV_IMAGE} AS uv-source
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# ── Stage 1: Builder ──────────────────────────────────────────────────────────
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FROM python:3.12-slim-bookworm AS builder
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ARG NODE_MAJOR=22
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ARG APT_MIRROR
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ARG UV_INDEX_URL
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# Optional extras to install (e.g. "postgres" for PostgreSQL support)
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# Usage: docker build --build-arg UV_EXTRAS=postgres,discord ...
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ARG UV_EXTRAS
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# Optionally override apt mirror for restricted networks (e.g. APT_MIRROR=mirrors.aliyun.com)
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RUN if [ -n "${APT_MIRROR}" ]; then \
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sed -i "s|deb.debian.org|${APT_MIRROR}|g" /etc/apt/sources.list.d/debian.sources 2>/dev/null || true; \
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sed -i "s|deb.debian.org|${APT_MIRROR}|g" /etc/apt/sources.list 2>/dev/null || true; \
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fi
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# Install build tools + Node.js (build-essential needed for native Python extensions)
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RUN apt-get update && apt-get install -y \
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curl \
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build-essential \
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gnupg \
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ca-certificates \
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&& mkdir -p /etc/apt/keyrings \
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&& curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg \
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&& echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_${NODE_MAJOR}.x nodistro main" > /etc/apt/sources.list.d/nodesource.list \
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&& apt-get update \
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&& apt-get install -y nodejs \
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&& rm -rf /var/lib/apt/lists/*
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# Install uv (source image overridable via UV_IMAGE build arg)
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COPY --from=uv-source /uv /uvx /usr/local/bin/
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# Set working directory
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WORKDIR /app
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# Copy backend source code
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COPY backend ./backend
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# Install dependencies with cache mount
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# `redis` is always installed because Docker Compose defaults the stream bridge
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# to Redis (DEER_FLOW_STREAM_BRIDGE_REDIS_URL); it is an optional extra elsewhere
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# so slim non-Docker installs do not pull it.
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# When UV_EXTRAS is set (comma- or whitespace-separated), installs optional dependencies.
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RUN --mount=type=cache,target=/root/.cache/uv \
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sh -c 'cd backend && \
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set -f; \
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extras_flags=""; \
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for extra in $(printf "%s" "$UV_EXTRAS" | tr "," " "); do \
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case "$extra" in \
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[!A-Za-z]* | *[!A-Za-z0-9_-]*) \
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echo "UV_EXTRAS entry $extra is invalid (must match [A-Za-z][A-Za-z0-9_-]*)" >&2; \
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exit 1; \
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;; \
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esac; \
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extras_flags="$extras_flags --extra $extra"; \
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done; \
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UV_INDEX_URL=${UV_INDEX_URL:-https://pypi.org/simple} uv sync --extra redis $extras_flags'
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# UTF-8 locale prevents UnicodeEncodeError on Chinese/emoji content in minimal
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# containers where locale configuration may be missing and the default encoding is not UTF-8.
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ENV LANG=C.UTF-8
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ENV LC_ALL=C.UTF-8
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ENV PYTHONIOENCODING=utf-8
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# ── Stage 2: Dev ──────────────────────────────────────────────────────────────
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# Retains compiler toolchain from builder so startup-time `uv sync` can build
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# source distributions in development containers.
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FROM builder AS dev
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# Install Docker CLI (for DooD: allows starting sandbox containers via host Docker socket)
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COPY --from=docker:cli /usr/local/bin/docker /usr/local/bin/docker
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EXPOSE 8001
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CMD ["sh", "-c", "cd backend && PYTHONPATH=. uv run uvicorn app.gateway.app:app --host 0.0.0.0 --port 8001"]
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# ── Stage 3: Runtime ──────────────────────────────────────────────────────────
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# Clean image without build-essential — reduces size (~200 MB) and attack surface.
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FROM python:3.12-slim-bookworm
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ENV LANG=C.UTF-8
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ENV LC_ALL=C.UTF-8
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ENV PYTHONIOENCODING=utf-8
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# Copy Node.js runtime from builder (provides npx for MCP servers)
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COPY --from=builder /usr/bin/node /usr/bin/node
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COPY --from=builder /usr/lib/node_modules /usr/lib/node_modules
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RUN ln -s ../lib/node_modules/npm/bin/npm-cli.js /usr/bin/npm \
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&& ln -s ../lib/node_modules/npm/bin/npx-cli.js /usr/bin/npx
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# Install Docker CLI (for DooD: allows starting sandbox containers via host Docker socket)
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COPY --from=docker:cli /usr/local/bin/docker /usr/local/bin/docker
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# Install uv (source image overridable via UV_IMAGE build arg)
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COPY --from=uv-source /uv /uvx /usr/local/bin/
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# Set working directory
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WORKDIR /app
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# Copy backend with pre-built virtualenv from builder
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COPY --from=builder /app/backend ./backend
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# Expose Gateway API port.
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EXPOSE 8001
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# Default command (can be overridden in docker-compose)
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CMD ["sh", "-c", "cd backend && PYTHONPATH=. uv run --no-sync uvicorn app.gateway.app:app --host 0.0.0.0 --port 8001"]
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