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✨ Feat: add model-downloader service with init container integration #738

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✨ Feat: add model-downloader service with init container integration #738

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8 changes: 6 additions & 2 deletions .github/workflows/docker-publish.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,7 @@ jobs:
packages: write
strategy:
matrix:
image: [extproc, llm-katan, dashboard]
image: [extproc, llm-katan, dashboard, model-downloader]
# Multi-architecture build strategy:
# - AMD64: Native build on ubuntu-latest (fast)
# - ARM64: Cross-compilation on ubuntu-latest (faster than emulation)
Expand Down Expand Up @@ -171,6 +171,10 @@ jobs:
echo "context=." >> $GITHUB_OUTPUT
echo "dockerfile=./dashboard/backend/Dockerfile" >> $GITHUB_OUTPUT
echo "platform=linux/${{ matrix.arch }}" >> $GITHUB_OUTPUT
elif [ "${{ matrix.image }}" = "model-downloader" ]; then
echo "context=." >> $GITHUB_OUTPUT
echo "dockerfile=./Dockerfile.model-downloader" >> $GITHUB_OUTPUT
echo "platform=linux/${{ matrix.arch }}" >> $GITHUB_OUTPUT
fi

- name: Generate tags
Expand Down Expand Up @@ -236,7 +240,7 @@ jobs:
packages: write
strategy:
matrix:
image: [extproc, llm-katan, dashboard]
image: [extproc, llm-katan, dashboard, model-downloader]

steps:
- name: Log in to GitHub Container Registry
Expand Down
24 changes: 24 additions & 0 deletions Dockerfile.model-downloader
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@@ -0,0 +1,24 @@
FROM python:3.11-slim

# Set environment variables
ENV PIP_DISABLE_PIP_VERSION_CHECK=1 \
PIP_NO_CACHE_DIR=1 \
PYTHONUNBUFFERED=1

# Add OCI labels
LABEL org.opencontainers.image.source="https://github.com/vllm-project/semantic-router" \
org.opencontainers.image.description="Lightweight model downloader for Semantic Router with huggingface_hub pre-installed"

WORKDIR /app

# Install minimal dependencies in a single layer
RUN apt-get update && \
apt-get install -y --no-install-recommends \
ca-certificates \
&& rm -rf /var/lib/apt/lists/* /var/cache/apt/archives/* \
&& pip install --no-cache-dir "huggingface_hub>=0.19.0" \
&& find /usr/local -type d -name '__pycache__' -exec rm -rf {} + 2>/dev/null || true \
&& find /usr/local -type f -name '*.pyc' -delete

# Set default entrypoint to bash to allow script execution from arguments
ENTRYPOINT ["/bin/bash", "-c"]
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