如何将预提交预安装到 docker 的钩子中答案

【问题标题】：How to pre-install pre commit into hooks into docker如何将预提交预安装到 docker 的钩子中
【发布时间】：2021-08-12 09:28:03
【问题描述】：

据我了解文档，每当我将这些行添加到配置中时：

repos:
-   repo: https://github.com/pre-commit/pre-commit-hooks
    rev: v2.1.0
    hooks:
    -   id: trailing-whitespace

它预先提交从这个 repo 下载钩子代码并执行它。是否可以以某种方式将所有挂钩预安装到 Docker 映像中。那么当我拨打pre-commit run时没有使用网络？

我找到了文档的this 部分，该部分描述了预提交如何缓存所有存储库。它们存储在~/.cache/pre-commit 中，可以通过更新PRE_COMMIT_HOME 环境变量来配置。

但是，缓存仅在我执行pre-commit run 时才有效。但我想预先安装所有不运行检查的东西。有可能吗？

【问题讨论】：

标签： pre-commit.com

【解决方案1】：

您正在寻找pre-commit install-hooks 命令

至少你需要这样的东西来缓存预提交环境：

COPY .pre-commit-config.yaml .
RUN git init . && pre-commit install-hooks

免责声明：我创建了预提交

【讨论】：

【解决方案2】：

@anthony-sottile 提供的片段就像魅力一样。它有助于利用 docker 缓存。这是来自 django world 的一个工作变体。

ARG PYTHON_VERSION=3.9-buster

# define an alias for the specfic python version used in this file.
FROM python:${PYTHON_VERSION} as python

# Python build stage
FROM python as python-build-stage

ARG BUILD_ENVIRONMENT=test

# Install apt packages
RUN apt-get update && apt-get install --no-install-recommends -y \
  # dependencies for building Python packages
  build-essential \
  # psycopg2 dependencies
  libpq-dev

# Requirements are installed here to ensure they will be cached.
COPY ./requirements .

# Create Python Dependency and Sub-Dependency Wheels.
RUN pip wheel --wheel-dir /usr/src/app/wheels  \
  -r ${BUILD_ENVIRONMENT}.txt


# Python 'run' stage
FROM python as python-run-stage

ARG BUILD_ENVIRONMENT=test
ARG APP_HOME=/app

ENV PYTHONUNBUFFERED 1
ENV PYTHONDONTWRITEBYTECODE 1
ENV BUILD_ENV ${BUILD_ENVIRONMENT}

WORKDIR ${APP_HOME}

# Install required system dependencies
RUN apt-get update && apt-get install --no-install-recommends -y \
  # psycopg2 dependencies
  libpq-dev \
  # Translations dependencies
  gettext \
  # cleaning up unused files
  && apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false \
  && rm -rf /var/lib/apt/lists/*

# All absolute dir copies ignore workdir instruction. All relative dir copies are wrt to the workdir instruction
# copy python dependency wheels from python-build-stage
COPY --from=python-build-stage /usr/src/app/wheels  /wheels/

# use wheels to install python dependencies
RUN pip install --no-cache-dir --no-index --find-links=/wheels/ /wheels/* \
    && rm -rf /wheels/

COPY ./compose/test/django/entrypoint /entrypoint
RUN chmod +x /entrypoint

COPY .pre-commit-config.yaml .
RUN git init . && pre-commit install-hooks

# copy application code to WORKDIR
COPY . ${APP_HOME}

ENTRYPOINT ["/entrypoint"]

然后您可以以类似的方式触发预提交检查：

docker-compose -p project_name -f test.yml run --rm django pre-commit run --all-files

【讨论】：