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Opened by Yahor Berdnikau@Tapchicoma2 of 3 tasks completed2/3 tasks
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Allow to use file checksum as cache key

Description

Provide a way to use project file checksum as a cache key. This will speed up pipeline execution time for many users.

Proposal

Add ability to specify key to CI YAML:

rspec:
  cache:
    key:
      files: Gemfile # generate checksum based on SHA as the `cache:key` value
      prefix: add-something

We would internally set cache:key to "add-something-#{SHA256(File.read(Gemfile))".

Links / references

Documentation blurb

Overview

Currently Gitlab CI doesn't allow to run scripts or have ability to provide project commit checksum in cache key directive.

I have a java project that uses gradle as a build system. In this project all dependencies are defined in a separate file. I would like to recreate gradle cache only when this file has changed.

Other build systems will also can benefit from this approach if projects will put all dependencies in one file.

Use cases

Feature checklist

Make sure these are completed before closing the issue, with a link to the relevant commit.

Edited by Jason Yavorska