完璧なPython Dockerfileを作る(後半）

Python のDockerfileについての記事です。長い記事なので前半と後半に分けて投稿いたします。今回は後半です。

完璧なPython Dockerfile

早速ですが、最終的なファイルを見てみましょう。

# using ubuntu LTS version
FROM ubuntu:20.04 AS builder-image
# avoid stuck build due to user prompt
ARG DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install --no-install-recommends -y python3.9 python3.9-dev python3.9-venv python3-pip python3-wheel build-essential && \
apt-get clean && rm -rf /var/lib/apt/lists/*
# create and activate virtual environment
# using final folder name to avoid path issues with packages
RUN python3.9 -m venv /home/myuser/venv
ENV PATH="/home/myuser/venv/bin:$PATH"
# install requirements
COPY requirements.txt .
RUN pip3 install --no-cache-dir wheel
RUN pip3 install --no-cache-dir -r requirements.txt
FROM ubuntu:20.04 AS runner-image
RUN apt-get update && apt-get install --no-install-recommends -y python3.9 python3-venv && \
apt-get clean && rm -rf /var/lib/apt/lists/*
RUN useradd --create-home myuser
COPY --from=builder-image /home/myuser/venv /home/myuser/venv