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Use CPU-only torch for Docker builds to reduce image size #2946

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Merged
adamtheturtle merged 4 commits into from
Feb 18, 2026
Merged

Use CPU-only torch for Docker builds to reduce image size #2946

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8087110
Use CPU-only torch for Docker builds to reduce image size
adamtheturtle Feb 18, 2026
bb7179c
Merge main, updating uv to 0.10.4
adamtheturtle Feb 18, 2026
1410e79
Fix torchvision CPU index and Docker venv creation
adamtheturtle Feb 18, 2026
9f484ea
Add torchvision as direct dependency for CPU index source to apply
adamtheturtle Feb 18, 2026
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9 changes: 9 additions & 0 deletions pyproject.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,7 @@ dependencies = [
"responses>=0.25.3",
"torch>=2.5.1",
"torchmetrics>=1.5.1",
"torchvision>=0.20.1",
"tzdata; sys_platform=='win32'",
"vws-auth-tools>=2024.7.12",
"werkzeug>=3.1.2",
Expand Down Expand Up @@ -138,6 +139,11 @@ fallback_version = "0.0.0"
# Code to match this is in ``conf.py``.
version_scheme = "post-release"

[tool.uv]
sources.torch = { index = "pytorch-cpu" }
sources.torchvision = { index = "pytorch-cpu" }
index = [ { name = "pytorch-cpu", url = "https://download.pytorch.org/whl/cpu", explicit = true } ]

[tool.ruff]
line-length = 79
lint.select = [
Expand Down Expand Up @@ -312,6 +318,9 @@ per_rule_ignores.DEP002 = [
# tzdata is needed on Windows for zoneinfo to work.
# See https://docs.python.org/3/library/zoneinfo.html#data-sources.
"tzdata",
# torchvision is used transitively via piq, but must be a direct dependency
# so that tool.uv.sources can route it to the CPU-only PyTorch index.
"torchvision",
]

[tool.pyproject-fmt]
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7 changes: 4 additions & 3 deletions src/mock_vws/_flask_server/Dockerfile
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Expand Up @@ -12,12 +12,13 @@ COPY --chown=myuser:myuser . /app
# See https://pythonspeed.com/articles/activate-virtualenv-dockerfile/
# For why we use this method of activating the virtual environment.
ENV VIRTUAL_ENV=/app/docker_venvs/.venv
RUN python3 -m venv $VIRTUAL_ENV
ENV UV_PROJECT_ENVIRONMENT=/app/docker_venvs/.venv
ENV PATH="$VIRTUAL_ENV/bin:$PATH"

WORKDIR /app
RUN pip install --no-cache-dir uv==0.10.4 && \
uv pip install --no-cache-dir --upgrade --editable .
RUN python3 -m venv $VIRTUAL_ENV && \
pip install --no-cache-dir uv==0.10.4 && \
uv sync --no-cache
EXPOSE 5000
ENTRYPOINT ["python"]
HEALTHCHECK --interval=1s --timeout=10s --start-period=5s --retries=3 CMD ["python", "/app/src/mock_vws/_flask_server/healthcheck.py"]
Expand Down