如何加速 GitLab runner？

Question

我在

t2.medium

AWS 实例（磁盘是 gp3）上通过 Docker 有一个 GitLab runner，用于以下

.gitlab-ci.yml

：

# This file is a template, and might need editing before it works on your project.
# To contribute improvements to CI/CD templates, please follow the Development guide at:
# https://docs.gitlab.com/ee/development/cicd/templates.html
# This specific template is located at:
# https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Python.gitlab-ci.yml

# Official language image. Look for the different tagged releases at:
# https://hub.docker.com/r/library/python/tags/
image: python:3.10

# Change pip's cache directory to be inside the project directory since we can
# only cache local items.
variables:
    PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"

# Pip's cache doesn't store the python packages
# https://pip.pypa.io/en/stable/topics/caching/
#
# If you want to also cache the installed packages, you have to install
# them in a virtualenv and cache it as well.
cache:
    paths:
        - .cache/pip
        - venv/

before_script:
    - python --version ; pip --version # For debugging
    - pip install virtualenv
    - virtualenv venv
    - source venv/bin/activate

stages:
    - build
    - lint

build:
    stage: build
    script:
        - pip install -r requirements-dev.txt

lint:
    stage: lint
    script:
        - flake8 .
        - mypy src

formatting:
    stage: lint
    script:
        - black --check .
        - isort --check .

我有以下问题：

• 工作超级慢（例如

  build

  阶段需要8分钟），尤其是缓存
• 由于某些未知原因，缓存创建发生在每个作业之后。我真的不明白为什么，因为

  linting

  和

  formatting

  工作不会改变

  venv

  目录中的任何东西。
• 几次运行后缓存创建失败，因为磁盘已满（只有 16 GB）。如何教 GitLab runner 清理磁盘？