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docker: split base image into builder and runtime stages

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Keeps compilers in the builder; runtime stage copies only the venv
and NumPy wheel.
This commit is contained in:
Kanishk Sachdev 2026-05-25 04:31:42 -04:00
parent c4b2fae85a
commit 2070f9e281
1 changed files with 49 additions and 13 deletions
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62
docker/DispatcharrBase
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@ -1,4 +1,10 @@
FROM lscr.io/linuxserver/ffmpeg:latest
# ==============================================================================
# Stage 1: builder
# Installs the Python toolchain + compilers, creates the virtual environment and
# builds the legacy (CPU-baseline=none) NumPy wheel. None of these compilers end
# up in the final image — only the artifacts below are copied forward.
# ==============================================================================
FROM lscr.io/linuxserver/ffmpeg:latest AS builder
ENV DEBIAN_FRONTEND=noninteractive
ENV UV_PROJECT_ENVIRONMENT=/dispatcharrpy
@ -15,10 +21,9 @@ RUN apt-get update && apt-get install --no-install-recommends -y \
&& apt-get update \
&& apt-get install --no-install-recommends -y \
python3.13 python3.13-dev python3.13-venv libpython3.13 \
libpcre3 libpcre3-dev libpq-dev procps pciutils \
nginx comskip \
vlc-bin vlc-plugin-base \
build-essential gcc g++ gfortran libopenblas-dev libopenblas0 ninja-build
libpcre3 libpcre3-dev libpq-dev \
build-essential gcc g++ gfortran libopenblas-dev libopenblas0 ninja-build \
&& rm -rf /var/lib/apt/lists/*
# --- Install UV ---
COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/
@ -28,11 +33,12 @@ WORKDIR /tmp/build
COPY pyproject.toml /tmp/build/
COPY version.py /tmp/build/
COPY README.md /tmp/build/
RUN uv sync --python 3.13 --no-cache --no-install-project --no-dev && \
rm -rf /tmp/build
RUN uv sync --python 3.13 --no-cache --no-install-project --no-dev
WORKDIR /
# --- Build legacy NumPy wheel for old hardware (store for runtime switching) ---
# build/pip are installed into the venv only long enough to produce the wheel,
# then uninstalled so they are not carried into the final image's venv.
RUN uv pip install --python $UV_PROJECT_ENVIRONMENT/bin/python --no-cache build pip && \
cd /tmp && \
$UV_PROJECT_ENVIRONMENT/bin/python -m pip download --no-binary numpy --no-deps numpy && \
@ -40,14 +46,44 @@ RUN uv pip install --python $UV_PROJECT_ENVIRONMENT/bin/python --no-cache build
cd numpy-*/ && \
$UV_PROJECT_ENVIRONMENT/bin/python -m build --wheel -Csetup-args=-Dcpu-baseline="none" -Csetup-args=-Dcpu-dispatch="none" && \
mv dist/*.whl /opt/ && \
cd / && rm -rf /tmp/numpy-* /tmp/*.tar.gz && \
cd / && rm -rf /tmp/numpy-* /tmp/*.tar.gz /tmp/build && \
uv pip uninstall --python $UV_PROJECT_ENVIRONMENT/bin/python build pip
# --- Clean up build dependencies to reduce image size ---
RUN apt-get remove -y build-essential gcc g++ gfortran libopenblas-dev libpcre3-dev python3.13-dev ninja-build && \
apt-get autoremove -y --purge && \
apt-get clean && \
rm -rf /var/lib/apt/lists/* /root/.cache /tmp/*
# ==============================================================================
# Stage 2: final runtime image
# Same ffmpeg base, but installs only the runtime system libraries (no compilers)
# and copies the prebuilt virtual environment + NumPy wheel from the builder.
# ==============================================================================
FROM lscr.io/linuxserver/ffmpeg:latest AS final
ENV DEBIAN_FRONTEND=noninteractive
ENV UV_PROJECT_ENVIRONMENT=/dispatcharrpy
ENV VIRTUAL_ENV=/dispatcharrpy
ENV PATH="$VIRTUAL_ENV/bin:$PATH"
ENV UV_COMPILE_BYTECODE=1
ENV UV_LINK_MODE=copy
# --- Install runtime system dependencies (no build toolchain) ---
# python3.13 + libpython3.13 back the copied venv; libpcre3 backs uWSGI;
# libopenblas0 backs the legacy NumPy wheel; ca-certificates/gnupg2/curl/wget
# and software-properties-common are kept for TLS and the AIO runtime apt step.
RUN apt-get update && apt-get install --no-install-recommends -y \
ca-certificates software-properties-common gnupg2 curl wget \
&& add-apt-repository ppa:deadsnakes/ppa \
&& apt-get update \
&& apt-get install --no-install-recommends -y \
python3.13 python3.13-venv libpython3.13 \
libpcre3 libpq-dev libopenblas0 procps pciutils \
nginx comskip \
vlc-bin vlc-plugin-base \
&& apt-get clean && rm -rf /var/lib/apt/lists/*
# --- Install UV (used at runtime to swap in the legacy NumPy wheel) ---
COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/
# --- Copy prebuilt virtual environment and legacy NumPy wheel from the builder ---
COPY --from=builder /dispatcharrpy /dispatcharrpy
COPY --from=builder /opt/numpy-*.whl /opt/
# --- Set up Redis 7.x ---
RUN curl -fsSL https://packages.redis.io/gpg | gpg --dearmor -o /usr/share/keyrings/redis-archive-keyring.gpg && \