Latchkey Docker Cache Build

Version updated for https://github.com/latchkey-dev/docker-cache-action to version v1.

  • This action is used across all versions by ? repositories.

Action Type

This is a Composite action.

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Action Summary

The Latchkey Docker Cache Action automates Docker image builds with layer caching by leveraging Amazon Elastic Container Registry (ECR) on Latchkey-managed runners. It detects and configures caching flags to enable efficient builds across ephemeral runner instances, reducing build times and improving performance. On non-Latchkey runners, it gracefully falls back to standard Docker builds without caching.

Release notes

Latchkey Docker Cache Action v1

Build Docker images with automatic ECR-based layer caching on Latchkey managed runners.

Usage

- uses: latchkey-dev/docker-cache-action@v1
  with:
    context: .
    tags: myapp:latest
    push: true

Features

  • Auto-detects ECR_CACHE_REPO from Latchkey runner environment
  • Configures BuildKit --cache-from and --cache-to for ECR registry cache
  • Graceful degradation on non-Latchkey runners (builds normally without cache)
  • Supports: context, dockerfile, tags, push, build-args, target, platforms, cache-mode, cache-tag, extra-cache-from, extra-cache-to
  • Outputs: cache-configured, image-digest
  • Masks build-arg values in logs to prevent secret leakage
  • Auto-loads images into local daemon for non-push single-platform builds