Dockerfile Build Cache Mastery

Q: What is a Claude Code skill and how does the Dockerfile Build Cache Mastery skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Dockerfile Build Cache Mastery is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: devops · Last updated: 2026-06-08

tool:docker

Use when optimizing Docker builds with BuildKit, designing multi-stage Dockerfiles, leveraging cache mounts, building multi-arch images, choosing distroless vs alpine, or signing images with cosign. Triggers: docker build slow, layer cache not hitting, npm install / pip install reruns, multi-stage final image bloat, glibc vs musl issues, RUN --mount=type=cache, BUILDKIT_INLINE_CACHE, registry cache exporters, qemu emulation for arm64, COPY ordering for cache. NOT for Docker daemon admin, Kubernetes-specific image policies, container security scanning workflows, or Buildpacks (different paradigm).

About this skill (catalog notes)

Dockerfile Build Cache Mastery includes pricing or quota commentary; 16 code blocks for direct copy-paste. At roughly 1,762 words the SKILL.md is on the longer end of the catalog distribution.

Original author: curiositech
Indexed lastmod: 2026-06-08
Catalog position: Engineering · devops
Indexed related skills: 10

How Dockerfile Build Cache Mastery fits the catalog

Dockerfile Build Cache Mastery sits in the Engineering category under the devops sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

The Docker build is a series of hashable layers. Speed comes from invalidating as few as possible. Most "build is slow" stories are layer ordering mistakes that bust the cache on every commit.

What this skill does

Dockerfile Build Cache Mastery is a community-contributed Claude Code skill in the devops sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/dockerfile-build-cache-mastery/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when optimizing Docker builds with BuildKit, designing multi-stage Dockerfiles, leveraging cache mounts, building multi-arch images, choosing distroless vs alpine, or signing images with cosign. Triggers: docker build slow, layer cache not hitting, npm install / pip install reruns, multi-stage final image bloat, glibc vs musl issues, RUN --mount=type=cache, BUILDKIT_INLINE_CACHE, registry cache exporters, qemu emulation for arm64, COPY ordering for cache.

Who uses this skill

The Dockerfile Build Cache Mastery Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 94,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/dockerfile-build-cache-mastery
curl -L https://claudskills.com/skills/dockerfile-build-cache-mastery/SKILL.md \
  -o ~/.claude/skills/dockerfile-build-cache-mastery/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/dockerfile-build-cache-mastery/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/dockerfile-build-cache-mastery/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\dockerfile-build-cache-mastery\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Dockerfile Build Cache Mastery Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/dockerfile-build-cache-mastery/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Dockerfile Build Cache Mastery skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Dockerfile Build Cache Mastery skill?

Use Dockerfile Build Cache Mastery when your Claude Code task falls under the Engineering category — specifically in the devops area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Dockerfile Build Cache Mastery" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Dockerfile Build Cache Mastery skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Dockerfile Build Cache Mastery is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/curiositech/windags-skills/blob/HEAD/skills/dockerfile-build-cache-mastery/SKILL.md
Author: curiositech

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

curiositech. (2026). Dockerfile Build Cache Mastery [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/dockerfile-build-cache-mastery/

BibTeX

@misc{dockerfile-build-cache-mastery-2026,
  author    = {curiositech},
  title     = {Dockerfile Build Cache Mastery [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/dockerfile-build-cache-mastery/}
}

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