Docker Best Practices
rohitg00/awesome-claude-code-toolkit
Docker best practices including multi-stage builds, compose patterns, image optimization, and security
References cold start optimization history and techniques. An agent skill from serithemage/serverless-openclaw.
Install Cold Start
$ npx skills add serithemage/serverless-openclaw --skill cold-start -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install serithemage/serverless-openclaw cold-start --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/serithemage/serverless-openclaw.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.codex/skills/cold-start .claude/skills/cold-start && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "cold-start" agent skill from https://github.com/serithemage/serverless-openclaw/tree/main/.codex/skills/cold-start into .claude/skills/cold-start/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-start", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/serithemage/serverless-openclaw/tree/main/.codex/skills/cold-startType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add serithemage/serverless-openclaw --skill cold-start -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install serithemage/serverless-openclaw cold-start --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/serithemage/serverless-openclaw.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.codex/skills/cold-start .agents/skills/cold-start && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "cold-start" agent skill from https://github.com/serithemage/serverless-openclaw/tree/main/.codex/skills/cold-start into .agents/skills/cold-start/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-start", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add serithemage/serverless-openclaw --skill cold-start -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install serithemage/serverless-openclaw cold-start --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/serithemage/serverless-openclaw.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.codex/skills/cold-start .cursor/skills/cold-start && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "cold-start" agent skill from https://github.com/serithemage/serverless-openclaw/tree/main/.codex/skills/cold-start into .cursor/skills/cold-start/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-start", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/serithemage/serverless-openclaw.git --path .codex/skills/cold-start--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add serithemage/serverless-openclaw --skill cold-start -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install serithemage/serverless-openclaw cold-start --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/serithemage/serverless-openclaw.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.codex/skills/cold-start .gemini/skills/cold-start && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "cold-start" agent skill from https://github.com/serithemage/serverless-openclaw/tree/main/.codex/skills/cold-start into .gemini/skills/cold-start/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-start", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install serithemage/serverless-openclaw cold-startInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add serithemage/serverless-openclaw --skill cold-start -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/serithemage/serverless-openclaw.git skills-src && mkdir -p .github/skills && cp -r skills-src/.codex/skills/cold-start .github/skills/cold-start && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "cold-start" agent skill from https://github.com/serithemage/serverless-openclaw/tree/main/.codex/skills/cold-start into .github/skills/cold-start/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-start", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add serithemage/serverless-openclaw --skill cold-start -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install serithemage/serverless-openclaw cold-start --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/serithemage/serverless-openclaw.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.codex/skills/cold-start .opencode/skills/cold-start && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "cold-start" agent skill from https://github.com/serithemage/serverless-openclaw/tree/main/.codex/skills/cold-start into .opencode/skills/cold-start/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-start", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
cold-start- GitHub stars
- 196
- Token cost
- ~1.1k tokens
- SKILL.md length
- 324 words
- Files
- 1
- Skills in repo
- 17
- Repo updated
- First seen
- Licence
- None found
At a glance
References cold start optimization history and techniques. An agent skill from serithemage/serverless-openclaw.
- Optimizing startup performance
- SKILL.md covers Results Summary, Measurement Commands, Docker Image Optimizations… and Fargate CPU Tuning (P7), plus 4 more sections
- Calls make and aws
- Tasks that involve Web performance
What it does
Cold Start is an agent skill from serithemage/serverless-openclaw. References cold start optimization history and techniques. Covers Docker image optimization, Fargate CPU tuning, SOCI lazy loading, and Lambda Bedrock discovery fix. Use when optimizing startup performance.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in DevOps & Cloud, covering Web performance and Containers. It works with Docker. The repository describes itself as: Run OpenClaw AI agent on-demand on AWS serverless infrastructure with Web UI and Telegram interfaces. Cost target ~$1/month.
When your agent uses it
- Optimizing startup performance
- Tasks that involve Web performance
- Tasks that involve Containers
Example prompts
- “Use the cold-start skill to reference cold start optimization history and techniques. An agent skill from serithemage/serverless-openclaw”
- “/cold-start”
Requirements
- Node.js
- Docker
- Pre-approved tools (allowed-tools): Read, Glob, Grep
What it can do on your machine
Read from SKILL.md and the folder at commit 504300d. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadGlobGrep
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
makeaws
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use aws, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Cold Start loads about 1.1k tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 324 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 324 words (~1,093 tokens).
- name
- cold-start
- allowed-tools
- Read, Glob, Grep
Files
Just SKILL.md in .codex/skills/cold-start of serithemage/serverless-openclaw.
Open the folder on GitHubat commit 504300d
Compare with similar skills
Cold Start next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Cold Start this skillserithemage/serverless-openclaw | 196 | — | ~1.1k | Automated safety check: Pass | None | |
| Docker Best Practicesrohitg00/awesome-claude-code-toolkit | 2.7k | — | ~938 | Automated safety check: Notes | Apache-2.0 | |
| Borg Live Debugkaranhudia/borg-ui | 1.7k | — | ~1.4k | Automated safety check: Notes | AGPL-3.0 | |
| Oneclickvirtoneclickvirt/oneclickvirt | 372 | — | ~1.1k | Automated safety check: Pass | GPL-3.0 | |
| LobeHub Micro App Splitting Guidelobehub/lobehub | 83k | — | ~9.3k | Automated safety check: Pass | Custom licence | |
| Modern Web GuidanceJetBrains/skills | 363 | 3 repos | ~1.4k | Automated safety check: Pass | Apache-2.0 |
Similar skills
Borg Live Debug
karanhudia/borg-ui
Live Borg debugging by exec-ing into the borg-web-ui Docker container.
Oneclickvirt
oneclickvirt/oneclickvirt
OneClickVirt operations skill for managing containers, virtual machines, provider nodes, health checks, and metrics through MCP.
LobeHub Micro App Splitting Guide
lobehub/lobehub
Documents how LobeHub's standalone micro apps are hosted, built and routed differently on Cloud versus self-hosted Docker, so a change does not break one path while fixing the other.
- Official
Modern Web Guidance
JetBrains/skills
Search tool for modern web development best practices. An agent skill from JetBrains/skills.
CLI Testing
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Manually test a running Vellum assistant end-to-end purely from the CLI — no desktop app or web UI.
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Related
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Categories
Questions about Cold Start
What does Cold Start do?
References cold start optimization history and techniques. An agent skill from serithemage/serverless-openclaw. Cold Start is an agent skill from serithemage/serverless-openclaw. References cold start optimization history and techniques.
When should I use Cold Start?
Cold Start fits situations like: optimizing startup performance; tasks that involve Web performance; tasks that involve Containers.
How do I install Cold Start in Claude Code?
Run `npx skills add serithemage/serverless-openclaw --skill cold-start -a claude-code`. Or copy the skill folder (.codex/skills/cold-start in serithemage/serverless-openclaw) into .claude/skills/cold-start in your project. Claude Code loads it when a task matches its description.
How do I install Cold Start in Codex?
Run `npx skills add serithemage/serverless-openclaw --skill cold-start -a codex`. Or copy the skill folder (.codex/skills/cold-start in serithemage/serverless-openclaw) into .agents/skills/cold-start in your project. Codex loads it when a task matches its description.
Can I use Cold Start in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add serithemage/serverless-openclaw --skill cold-start -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cold-start, .gemini/skills/cold-start, .github/skills/cold-start and .opencode/skills/cold-start in your project.
What does Cold Start need to run?
Going by SKILL.md and its folder, Cold Start needs the command-line tools its instructions call (make and aws). Our summary lists: Node.js; Docker. Its frontmatter pre-approves these tools: Read, Glob, Grep.
Does Cold Start access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Cold Start safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Cold Start use?
No licence was found for Cold Start or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Cold Start use?
About 1.1k tokens (SKILL.md is roughly 4.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Cold Start?
Skills that share tags, products or a category with Cold Start: Docker Best Practices (rohitg00/awesome-claude-code-toolkit, 2.7k stars), Borg Live Debug (karanhudia/borg-ui, 1.7k stars), Oneclickvirt (oneclickvirt/oneclickvirt, 372 stars) and LobeHub Micro App Splitting Guide (lobehub/lobehub, 83k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Cold Start?
serithemage (a GitHub user) maintains it in serithemage/serverless-openclaw, which has 196 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on March 29, 2026.
Source: serithemage/serverless-openclaw on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.