# Earthly

> Earthly containerized CI/CD build tool reference. Dockerfile meets Makefile. Covers Earthfile syntax, multi-language targets, build args, secrets, cache mounts, parallel builds, importing from other repos, CI integration, and artifact management.

- Skill: `bytesagain/earthly` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add bytesagain/earthly`
- Raw SKILL.md: https://api.skillmd.com/api/skills/bytesagain/earthly/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- Author: bytesagain (https://skillmd.com/u/bytesagain)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/bytesagain/earthly

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# Earthly Reference

Containerized builds — Dockerfile + Makefile.

## Commands

| Command | Description |
|---------|-------------|
| `intro` | Overview, comparison |
| `earthfile` | Syntax, targets |
| `features` | Args, secrets, CI, caching |