fix(ci-action): install git in Dockerfile so lingo.dev ci works out…

[louisguitton]

Summary

Install git in the lingodotdev/ci-action Docker image so lingo.dev ci works in runners that do not already provide it (e.g. GitLab CI using the image directly).

Changes

• Dockerfile: add RUN apk add --no-cache git after the node:20.12.2-alpine base image.
• .changeset/fix-dockerfile-install-git.md: patch-level changeset for the lingo.dev package.

Testing

Business logic tests added:

• N/A — Dockerfile-only change. No existing image-level test harness in the repo, and there is no CLI code path to unit-test.
• Verified locally by building the image and running lingo.dev ci:

  docker build -t ci-action-local .
  docker run --rm -v "$PWD:/work" -w /work ci-action-local \
    sh -c 'git --version && npx lingo.dev@latest ci --help'
  Before the change: /bin/sh: git: not found, exit 127.
  After the change: git version 2.x and the CLI help prints.
  
  

Visuals

• N/A — no UI surface.

Checklist

• Changeset added (if version bump needed)
• Tests cover business logic (not just happy path)
• No breaking changes (or documented below)

Closes #2074

Summary by CodeRabbit

• Bug Fixes
  • Updated the Docker image to install git as a system dependency. The CI action now runs successfully on CI runners that don't have git pre-installed, ensuring compatibility across different environments.

[coderabbitai]

📝 Walkthrough

Walkthrough

The pull request adds git as a system dependency to the lingodotdev/ci-action Docker image and documents the fix in a changeset. The Dockerfile now installs git via apk add --no-cache git, enabling the lingo.dev ci command to run on CI runners (e.g., GitLab CI) that do not include git by default.

Changes

Docker Image Git Dependency Fix

Layer / File(s)	Summary
Docker image git installation and release documentation Dockerfile, .changeset/fix-dockerfile-install-git.md	Dockerfile installs git via apk in Alpine Node image; changeset documents patch release for lingodotdev/ci-action to enable ci command on non-GitHub runners.

Estimated Code Review Effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

A rabbit hops through Docker files,
Finds git was hiding all this while!
One line of apk add to save the day—
Now CI runs smoothly, hip-hop-hooray! 🐰📦

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main fix: adding git to the Dockerfile for the CI action image, enabling lingo.dev ci to work in runners without git.
Linked Issues check	✅ Passed	The pull request directly implements the proposed fix from issue #2074: adding git to the Dockerfile via apk add, enabling lingo.dev ci to work outside GitHub runners.
Out of Scope Changes check	✅ Passed	All changes are directly scoped to issue #2074: the Dockerfile modification to add git and the changeset file documenting the patch update.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description check	✅ Passed	The PR description follows the template structure with all required sections completed: Summary, Changes, Testing, Visuals, and Checklist are all present and properly filled out.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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