Dockerfile.cpu

# This vLLM Dockerfile is used to build images that can run vLLM on both x86_64 and arm64 CPU platforms.
#
# Supported platforms:
#   - linux/amd64 (x86_64)
#   - linux/arm64 (aarch64)
#
# Use the `--platform` option with `docker buildx build` to specify the target architecture, e.g.:
#   docker buildx build --platform=linux/arm64 -f docker/Dockerfile.cpu .
#
# Build targets:
#   vllm-openai (default): used for serving deployment
#   vllm-test: used for CI tests
#   vllm-dev: used for development
#
# Build arguments:
#   PYTHON_VERSION=3.13|3.12 (default)|3.11|3.10
#   VLLM_CPU_X86=false (default)|true (for cross-compilation)
#   VLLM_CPU_ARM_BF16=false (default)|true (for cross-compilation)
#

######################### COMMON BASE IMAGE #########################
FROM ubuntu:22.04 AS base-common

WORKDIR /workspace

ARG PYTHON_VERSION=3.12
ARG PIP_EXTRA_INDEX_URL="https://download.pytorch.org/whl/cpu"

# Install minimal dependencies and uv
RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
    --mount=type=cache,target=/var/lib/apt,sharing=locked \
    apt-get update -y \
    && apt-get install -y --no-install-recommends sudo ccache git curl wget ca-certificates \
    gcc-12 g++-12 libtcmalloc-minimal4 libnuma-dev ffmpeg libsm6 libxext6 libgl1 jq lsof make xz-utils \
    && update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-12 10 --slave /usr/bin/g++ g++ /usr/bin/g++-12 \
    && curl -LsSf https://astral.sh/uv/install.sh | sh

ENV CC=/usr/bin/gcc-12 CXX=/usr/bin/g++-12
ENV CCACHE_DIR=/root/.cache/ccache
ENV CMAKE_CXX_COMPILER_LAUNCHER=ccache

ENV PATH="/root/.local/bin:$PATH"
ENV VIRTUAL_ENV="/opt/venv"
ENV UV_PYTHON_INSTALL_DIR=/opt/uv/python
RUN uv venv --python ${PYTHON_VERSION} --seed ${VIRTUAL_ENV}
ENV PATH="$VIRTUAL_ENV/bin:$PATH"

ENV UV_HTTP_TIMEOUT=500

# Install Python dependencies
ENV PIP_EXTRA_INDEX_URL=${PIP_EXTRA_INDEX_URL}
ENV UV_EXTRA_INDEX_URL=${PIP_EXTRA_INDEX_URL}
ENV UV_INDEX_STRATEGY="unsafe-best-match"
ENV UV_LINK_MODE="copy"

# Copy requirements files for installation
COPY requirements/common.txt requirements/common.txt
COPY requirements/cpu.txt requirements/cpu.txt

RUN --mount=type=cache,target=/root/.cache/uv \
    uv pip install --upgrade pip && \
    uv pip install -r requirements/cpu.txt

ARG TARGETARCH
ENV TARGETARCH=${TARGETARCH}

######################### x86_64 BASE IMAGE #########################
FROM base-common AS base-amd64

ENV LD_PRELOAD="/usr/lib/x86_64-linux-gnu/libtcmalloc_minimal.so.4:/opt/venv/lib/libiomp5.so"

######################### arm64 BASE IMAGE #########################
FROM base-common AS base-arm64

ENV LD_PRELOAD="/usr/lib/aarch64-linux-gnu/libtcmalloc_minimal.so.4"

######################### BASE IMAGE #########################
FROM base-${TARGETARCH} AS base

RUN echo 'ulimit -c 0' >> ~/.bashrc

######################### BUILD IMAGE #########################
FROM base AS vllm-build

ARG max_jobs=32
ENV MAX_JOBS=${max_jobs}

ARG GIT_REPO_CHECK=0
# Support for cross-compilation with x86 ISA including AVX2 and AVX512: docker build --build-arg VLLM_CPU_X86="true" ...
ARG VLLM_CPU_X86=0
ENV VLLM_CPU_X86=${VLLM_CPU_X86}
# Support for cross-compilation with ARM BF16 ISA: docker build --build-arg VLLM_CPU_ARM_BF16="true" ...
ARG VLLM_CPU_ARM_BF16=0
ENV VLLM_CPU_ARM_BF16=${VLLM_CPU_ARM_BF16}

WORKDIR /vllm-workspace

# Validate build arguments - prevent mixing incompatible ISA flags
RUN if [ "$TARGETARCH" = "arm64" ] && [ "$VLLM_CPU_X86" != "0" ]; then \
        echo "ERROR: Cannot use x86-specific ISA flags (AVX2, AVX512, etc.) when building for ARM64 (--platform=linux/arm64)"; \
        exit 1; \
    fi && \
    if [ "$TARGETARCH" = "amd64" ] && [ "$VLLM_CPU_ARM_BF16" != "0" ]; then \
        echo "ERROR: Cannot use ARM-specific ISA flags (ARM_BF16) when building for x86_64 (--platform=linux/amd64)"; \
        exit 1; \
    fi

# Copy build requirements
COPY requirements/cpu-build.txt requirements/build.txt

RUN --mount=type=cache,target=/root/.cache/uv \
    uv pip install -r requirements/build.txt

COPY . .

RUN if [ "$GIT_REPO_CHECK" != 0 ]; then bash tools/check_repo.sh ; fi

RUN --mount=type=cache,target=/root/.cache/uv \
    --mount=type=cache,target=/root/.cache/ccache \
    --mount=type=cache,target=/vllm-workspace/.deps,sharing=locked \
    VLLM_TARGET_DEVICE=cpu python3 setup.py bdist_wheel --dist-dir=dist --py-limited-api=cp38

######################### TEST DEPS #########################
FROM base AS vllm-test-deps

WORKDIR /vllm-workspace

# Copy test requirements
COPY requirements/test.in requirements/cpu-test.in

RUN \
    sed -i '/mamba_ssm/d' requirements/cpu-test.in && \
    remove_packages_not_supported_on_aarch64() { \
    case "$(uname -m)" in \
    aarch64|arm64) \
    sed -i '/decord/d' requirements/cpu-test.in; \
    sed -i '/terratorch/d' requirements/cpu-test.in; \
    ;; \
    esac; \
    }; \
    remove_packages_not_supported_on_aarch64 && \
    sed -i 's/^torch==.*/torch==2.10.0/g' requirements/cpu-test.in && \
    sed -i 's/torchaudio.*/torchaudio/g' requirements/cpu-test.in && \
    sed -i 's/torchvision.*/torchvision/g' requirements/cpu-test.in && \
    uv pip compile requirements/cpu-test.in -o requirements/cpu-test.txt --index-strategy unsafe-best-match --torch-backend cpu

RUN --mount=type=cache,target=/root/.cache/uv \
    uv pip install -r requirements/cpu-test.txt

######################### DEV IMAGE #########################
FROM vllm-build AS vllm-dev

WORKDIR /vllm-workspace

RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
    --mount=type=cache,target=/var/lib/apt,sharing=locked \
    apt-get install -y --no-install-recommends vim numactl clangd-14

RUN ln -s /usr/bin/clangd-14 /usr/bin/clangd

# install development dependencies (for testing)
RUN --mount=type=cache,target=/root/.cache/uv \
    uv pip install -e tests/vllm_test_utils

RUN --mount=type=cache,target=/root/.cache/uv \
    --mount=type=cache,target=/root/.cache/ccache \
    --mount=type=bind,source=.git,target=.git \
    VLLM_TARGET_DEVICE=cpu python3 setup.py develop

COPY --from=vllm-test-deps /vllm-workspace/requirements/cpu-test.txt requirements/test.txt

RUN --mount=type=cache,target=/root/.cache/uv \
    uv pip install -r requirements/dev.txt && \
    pre-commit install --hook-type pre-commit --hook-type commit-msg

ENTRYPOINT ["bash"]

######################### TEST IMAGE #########################
FROM vllm-test-deps AS vllm-test

WORKDIR /vllm-workspace

RUN --mount=type=cache,target=/root/.cache/uv \
    --mount=type=bind,from=vllm-build,src=/vllm-workspace/dist,target=dist \
    uv pip install dist/*.whl

ADD ./tests/ ./tests/
ADD ./examples/ ./examples/
ADD ./benchmarks/ ./benchmarks/
ADD ./vllm/collect_env.py .
ADD ./.buildkite/ ./.buildkite/

# install development dependencies (for testing)
RUN --mount=type=cache,target=/root/.cache/uv \
    uv pip install -e tests/vllm_test_utils

######################### RELEASE IMAGE #########################
FROM base AS vllm-openai

WORKDIR /vllm-workspace

RUN --mount=type=cache,target=/root/.cache/uv \
    --mount=type=cache,target=/root/.cache/ccache \
    --mount=type=bind,from=vllm-build,src=/vllm-workspace/dist,target=dist \
    uv pip install dist/*.whl

# Add labels to document build configuration
LABEL org.opencontainers.image.title="vLLM CPU"
LABEL org.opencontainers.image.description="vLLM inference engine for CPU platforms"
LABEL org.opencontainers.image.vendor="vLLM Project"
LABEL org.opencontainers.image.source="https://github.com/vllm-project/vllm"

# Build configuration labels
ARG TARGETARCH
ARG VLLM_CPU_X86
ARG VLLM_CPU_ARM_BF16
ARG PYTHON_VERSION

LABEL ai.vllm.build.target-arch="${TARGETARCH}"
LABEL ai.vllm.build.cpu-x86="${VLLM_CPU_X86:-false}"
LABEL ai.vllm.build.cpu-arm-bf16="${VLLM_CPU_ARM_BF16:-false}"
LABEL ai.vllm.build.python-version="${PYTHON_VERSION:-3.12}"

ENTRYPOINT ["vllm", "serve"]