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Dockerfile.node

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#
# Dockerfile.node - nodejs Only
#
# This Dockerfile builds only the nodejs (Node.js app) without Django, frontend, or other PostHog components.
# Use this for running standalone Node.js plugin server instances.
#

#
# Build stage: Compile nodejs and dependencies
#
FROM ghcr.io/posthog/rust-node-container:bookworm_rust_1.91-node_26.13.0 AS nodejs-build

# Compile and install system dependencies
# Add Confluent's client repository for librdkafka 2.12.0
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    "wget" \
    "gnupg" \
    && \
    mkdir -p /etc/apt/keyrings && \
    wget -qO - https://packages.confluent.io/clients/deb/archive.key | gpg --dearmor -o /etc/apt/keyrings/confluent-clients.gpg && \
    echo "deb [signed-by=/etc/apt/keyrings/confluent-clients.gpg] https://packages.confluent.io/clients/deb/ bookworm main" > /etc/apt/sources.list.d/confluent-clients.list && \
    apt-get update && \
    apt-get install -y --no-install-recommends --allow-downgrades \
    "make" \
    "g++" \
    "gcc" \
    "python3" \
    "librdkafka1=2.12.0-1.cflt~deb12" \
    "librdkafka++1=2.12.0-1.cflt~deb12" \
    "librdkafka-dev=2.12.0-1.cflt~deb12" \
    # libssl pinned to the 3.0 series (ABI-stable), not an exact version: Debian rotates
    # point releases out of the security archive, which breaks exact pins on uncached builds.
    "libssl-dev=3.0.*" \
    "libssl3=3.0.*" \
    "zlib1g-dev" \
    && \
    rm -rf /var/lib/apt/lists/*

WORKDIR /code
COPY turbo.json package.json pnpm-lock.yaml pnpm-workspace.yaml tsconfig.json ./
COPY ./bin/turbo ./bin/turbo
COPY ./patches ./patches
COPY ./rust ./rust
COPY ./common/esbuilder/ ./common/esbuilder/
COPY ./common/plugin_transpiler/ ./common/plugin_transpiler/
COPY ./common/hogvm/typescript/ ./common/hogvm/typescript/
COPY ./nodejs/package.json ./nodejs/tsconfig.json ./nodejs/
COPY ./common/replay-shared/package.json ./common/replay-shared/
COPY ./common/replay-headless/package.json ./common/replay-headless/
SHELL ["/bin/bash", "-e", "-o", "pipefail", "-c"]

# Use system librdkafka from Confluent (2.12.0) instead of bundled version
ENV BUILD_LIBRDKAFKA=0

# Compile and install Node.js dependencies
# The base image ships standalone Yarn 1 links that block corepack's own yarn shims.
RUN rm -rf /usr/local/bin/yarn /usr/local/bin/yarnpkg /opt/yarn-v* && \
    npm install -g corepack@0.36.0
RUN --mount=type=cache,id=pnpm,target=/tmp/pnpm-store-v24 \
    corepack enable && \
    NODE_OPTIONS="--max-old-space-size=16384" CI=1 pnpm --filter=@posthog/nodejs... install --frozen-lockfile --store-dir /tmp/pnpm-store-v24 && \
    NODE_OPTIONS="--max-old-space-size=16384" CI=1 pnpm --filter=@posthog/replay-headless... install --frozen-lockfile --store-dir /tmp/pnpm-store-v24 && \
    NODE_OPTIONS="--max-old-space-size=16384" CI=1 pnpm --filter=@posthog/plugin-transpiler... install --frozen-lockfile --store-dir /tmp/pnpm-store-v24 && \
    NODE_OPTIONS="--max-old-space-size=16384" bin/turbo --filter=@posthog/plugin-transpiler build

# Build the nodejs services
COPY ./nodejs/src/ ./nodejs/src/
COPY ./nodejs/tests/ ./nodejs/tests/
COPY ./nodejs/assets/ ./nodejs/assets/
COPY ./nodejs/bin/ ./nodejs/bin/
COPY ./common/replay-shared/src/ ./common/replay-shared/src/
COPY ./common/replay-shared/tsconfig.json ./common/replay-shared/
COPY ./common/replay-headless/src/ ./common/replay-headless/src/
COPY ./common/replay-headless/build.mjs ./common/replay-headless/

# Build the rust hogvm napi addon (shadow execution of transformations)
RUN NODE_OPTIONS="--max-old-space-size=16384" bin/turbo --filter=@posthog/hogvm-node build

# Build the session-replay anonymizer native addon
RUN NODE_OPTIONS="--max-old-space-size=16384" bin/turbo --filter=@posthog/replay-anonymizer build

# Build the v4 AI research native addon (the URL policy of the v4 image fetcher)
RUN NODE_OPTIONS="--max-old-space-size=16384" bin/turbo --filter=@posthog/ai-research-v4-native build

# Build replay-headless (dependency of nodejs rasterizer code)
RUN NODE_OPTIONS="--max-old-space-size=16384" bin/turbo --filter=@posthog/replay-headless build
# Then build the nodejs services
RUN NODE_OPTIONS="--max-old-space-size=16384" bin/turbo --filter=@posthog/nodejs build

# Record the Django and sqlx migrations this build reads, so the deploy-time schema check can wait for them
# (nodejs/src/schema-check). Bind mounts give the generator the migration files without adding the
# Python and Rust trees to any layer, and BuildKit reruns this step when any mounted file changes.
ARG COMMIT_HASH
RUN --mount=type=bind,source=posthog,target=/schema-src/posthog \
    --mount=type=bind,source=ee,target=/schema-src/ee \
    --mount=type=bind,source=products,target=/schema-src/products \
    --mount=type=bind,source=nodejs/src,target=/schema-src/nodejs/src \
    --mount=type=bind,source=rust/persons_migrations,target=/schema-src/rust/persons_migrations \
    --mount=type=bind,source=rust/cyclotron-node-migrations,target=/schema-src/rust/cyclotron-node-migrations \
    --mount=type=bind,source=rust/behavioral_cohorts_migrations,target=/schema-src/rust/behavioral_cohorts_migrations \
    node nodejs/dist/schema-check/generate.js \
    --repo-root /schema-src \
    --output nodejs/schema-requirements.json \
    --source-commit "${COMMIT_HASH:-unknown}"


#
# Runtime stage: Minimal image with only nodejs runtime dependencies
#
# Trixie, not bookworm: the uWebSockets.js binary for Node 26 needs glibc 2.38, and bookworm ships 2.36.
FROM node:26.13.0-trixie-slim
WORKDIR /code
SHELL ["/bin/bash", "-e", "-o", "pipefail", "-c"]

# Install runtime dependencies
# Add Confluent's client repository for librdkafka runtime
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    "ca-certificates" \
    "wget" \
    "gnupg" \
    && \
    mkdir -p /etc/apt/keyrings && \
    wget -qO - https://packages.confluent.io/clients/deb/archive.key | gpg --dearmor -o /etc/apt/keyrings/confluent-clients.gpg && \
    # The bookworm repo, because Confluent publishes no 2.12.0 build for trixie. The runtime
    # librdkafka must match the 2.12.0 headers that the build stage compiles node-rdkafka against.
    echo "deb [signed-by=/etc/apt/keyrings/confluent-clients.gpg] https://packages.confluent.io/clients/deb/ bookworm main" > /etc/apt/sources.list.d/confluent-clients.list && \
    apt-get update && \
    apt-get install -y --no-install-recommends --allow-downgrades \
    "librdkafka1=2.12.0-1.cflt~deb12" \
    "librdkafka++1=2.12.0-1.cflt~deb12" \
    # libssl pinned to the 3.5 series (ABI-stable), not an exact version: Debian rotates
    # point releases out of the security archive, which breaks exact pins on uncached builds.
    "libssl3t64=3.5.*" \
    "curl" \
    "gettext-base" \
    "libjemalloc2" \
    && \
    rm -rf /var/lib/apt/lists/*
# curl: Required by bin/nodejs startup script to fetch EC2 metadata when INJECT_EC2_CLIENT_RACK is set
# gettext-base: Provides envsubst command used by bin/nodejs to substitute environment variables in Kafka client IDs

# Install and use a non-root user
RUN groupadd -g 10001 posthog && \
    useradd -u 10001 -g posthog -m -d /home/posthog posthog && \
    chown -R posthog:posthog /code
USER posthog

# Add the commit hash
ARG COMMIT_HASH
RUN echo ${COMMIT_HASH:-unknown} > /code/commit.txt


# Add in the compiled nodejs & its runtime dependencies from the build stage
COPY --from=nodejs-build --chown=posthog:posthog /code/rust/common/hogvm/node/package.json /code/rust/common/hogvm/node/package.json
COPY --from=nodejs-build --chown=posthog:posthog /code/rust/common/hogvm/node/index.js /code/rust/common/hogvm/node/index.js
COPY --from=nodejs-build --chown=posthog:posthog /code/rust/common/hogvm/node/index.node /code/rust/common/hogvm/node/index.node
COPY --from=nodejs-build --chown=posthog:posthog /code/rust/replay-anonymizer-node/dist /code/rust/replay-anonymizer-node/dist
COPY --from=nodejs-build --chown=posthog:posthog /code/rust/replay-anonymizer-node/package.json /code/rust/replay-anonymizer-node/package.json
COPY --from=nodejs-build --chown=posthog:posthog /code/rust/replay-anonymizer-node/index.node /code/rust/replay-anonymizer-node/index.node
COPY --from=nodejs-build --chown=posthog:posthog /code/rust/ai-research/replay-core-v4-node/dist /code/rust/ai-research/replay-core-v4-node/dist
COPY --from=nodejs-build --chown=posthog:posthog /code/rust/ai-research/replay-core-v4-node/package.json /code/rust/ai-research/replay-core-v4-node/package.json
COPY --from=nodejs-build --chown=posthog:posthog /code/rust/ai-research/replay-core-v4-node/index.node /code/rust/ai-research/replay-core-v4-node/index.node
COPY --from=nodejs-build --chown=posthog:posthog /code/common/plugin_transpiler/dist /code/common/plugin_transpiler/dist
COPY --from=nodejs-build --chown=posthog:posthog /code/common/plugin_transpiler/node_modules /code/common/plugin_transpiler/node_modules
COPY --from=nodejs-build --chown=posthog:posthog /code/common/plugin_transpiler/package.json /code/common/plugin_transpiler/package.json
COPY --from=nodejs-build --chown=posthog:posthog /code/common/hogvm/typescript/dist /code/common/hogvm/typescript/dist
COPY --from=nodejs-build --chown=posthog:posthog /code/common/hogvm/typescript/node_modules /code/common/hogvm/typescript/node_modules
COPY --from=nodejs-build --chown=posthog:posthog /code/common/hogvm/typescript/package.json /code/common/hogvm/typescript/package.json
COPY --from=nodejs-build --chown=posthog:posthog /code/nodejs/dist /code/nodejs/dist
COPY --from=nodejs-build --chown=posthog:posthog /code/node_modules /code/node_modules
COPY --from=nodejs-build --chown=posthog:posthog /code/nodejs/node_modules /code/nodejs/node_modules
COPY --from=nodejs-build --chown=posthog:posthog /code/nodejs/package.json /code/nodejs/package.json
COPY --from=nodejs-build --chown=posthog:posthog /code/nodejs/schema-requirements.json /code/nodejs/schema-requirements.json
COPY --from=nodejs-build --chown=posthog:posthog /code/common/replay-headless/dist /code/common/replay-headless/dist
COPY --from=nodejs-build --chown=posthog:posthog /code/common/replay-headless/package.json /code/common/replay-headless/package.json
COPY --from=nodejs-build --chown=posthog:posthog /code/nodejs/assets /code/nodejs/assets
COPY --from=nodejs-build --chown=posthog:posthog /code/nodejs/bin /code/nodejs/bin


# Setup ENV
ENV NODE_ENV=production \
    BUILD_LIBRDKAFKA=0

# Expose the port from which we serve OpenMetrics data
EXPOSE 8001

# Default command: run the nodejs services
CMD ["node", "nodejs/dist/index.js"]