python 3.13

Use it as a base image

Reference it in the FROM line of your Dockerfile. Nonroot, read-only root filesystem, built for amd64 and arm64.

FROM ghcr.io/quenchworks/images/python:3.13

Or pull it directly

docker pull ghcr.io/quenchworks/images/python:3.13

Version line

3.13

Latest line

3.12, 3.13, 3.14

Architectures

amd64, arm64

Runs as

nonroot (uid 1001)

Root filesystem

read-only

License

PSF-2.0

Verify the supply chain

This image is cosign-signed and carries an SPDX SBOM and a SLSA build-provenance attestation on the same digest. Check all three before you build on it:

# 1. signature — built and signed by QuenchWorks CI
cosign verify ghcr.io/quenchworks/images/python:3.13 \
  --certificate-identity-regexp 'https://github.com/quenchworks/.+' \
  --certificate-oidc-issuer https://token.actions.githubusercontent.com

# 2. SLSA build provenance — which workflow built it, from what
gh attestation verify oci://ghcr.io/quenchworks/images/python:3.13 --owner quenchworks

# 3. SPDX SBOM — the package inventory
gh attestation verify oci://ghcr.io/quenchworks/images/python:3.13 --owner quenchworks \
  --predicate-type https://spdx.dev/Document

See the SBOM & provenance guide for reading the SBOM and using these checks in CI.

Best-practice Dockerfile for 3.13

Build a self-contained virtualenv with the full build toolchain in the first stage, then copy just that venv onto a clean python base for the runtime. Compilers and headers never reach the deployed image.

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# Build stage: install everything into a venv (build deps included).
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FROM ghcr.io/quenchworks/images/python:3.13 AS build
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USER root
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WORKDIR /app
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ENV VIRTUAL_ENV=/opt/venv \
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    PATH="/opt/venv/bin:$PATH" \
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    PIP_CACHE_DIR=/tmp/pip
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RUN ["python", "-m", "venv", "/opt/venv"]
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COPY requirements.txt ./
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RUN ["pip", "install", "--no-cache-dir", "-r", "requirements.txt"]
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COPY . .
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# Runtime stage: copy the venv + app onto a clean python base, run nonroot.
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FROM ghcr.io/quenchworks/images/python:3.13 AS runtime
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WORKDIR /app
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ENV VIRTUAL_ENV=/opt/venv \
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    PATH="/opt/venv/bin:$PATH" \
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    PYTHONUNBUFFERED=1 \
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    XDG_CACHE_HOME=/tmp
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COPY --from=build /opt/venv /opt/venv
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COPY --from=build /app /app
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USER 1001
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EXPOSE 8000
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CMD ["python", "-m", "app"]

This Dockerfile is pinned to the 3.13 line. For the line-by-line walkthrough and ecosystem variants (npm/Yarn, pip/uv/Poetry, Maven/Gradle), see the Build a Python app guide.