A minimal Python3 Dockerfile with uv

I noticed that my simple python3 docker image with uv has an unexpected number of downloads, so I decided to steal some traffic from the original https://docs.astral.sh/uv/guides/integration/docker/ page.

# What is uv?

Create image illustration in anime style included python3’s snake, rust and uv (it’s new package manager for python written in rust)

uv is a fast Rust-based Python package tool. It replaces pip for this build. It also replaces python3 -m venv ./venv, and probably more by the time I reread this.

# Minimal uv Dockerfile

Do not use my old one and two. Use the multi-stage build:

ARG BASE_IMAGE=python:3.14-slim-trixie
ARG UV_VERSION=0.10.4-python3.14-trixie-slim

FROM ghcr.io/astral-sh/uv:$UV_VERSION AS uv_carrier
FROM $BASE_IMAGE AS builder

COPY --from=uv_carrier /usr/local/bin/uv /usr/local/bin/
RUN uv venv /opt/venv
ENV PATH=/opt/venv/bin:$PATH

COPY ./requirements.txt requirements.txt
RUN uv pip install -r requirements.txt

FROM $BASE_IMAGE

ENV PYTHONUNBUFFERED=1 \
    PATH=/opt/venv/bin:$PATH

COPY --from=builder /opt/venv /opt/venv

COPY . /opt/app
RUN python -m compileall -q -j 0 /opt/app
WORKDIR /opt/app

# CI verdict: use uv where it saves time

I don’t spend time wiring uv into every local shell. CI is different. There it saves time on every build. Use it there.