docker-helper

What This Skill Does

docker-helper is a powerful OpenClaw agent skill designed to streamline the lifecycle of containerized applications. It acts as an expert DevOps assistant that handles Dockerfile generation, complex docker-compose orchestration, command retrieval, and deep-level debugging. Whether you are setting up a local development environment, optimizing production-ready images, or configuring private container registries, this tool provides standardized, efficient, and best-practice solutions. It is specifically optimized for Chinese-speaking developers, ensuring that all explanations, command suggestions, and troubleshooting steps are communicated clearly and contextually.

Installation

To integrate this skill into your environment, use the OpenClaw command-line interface. Execute the following command in your terminal: clawhub install openclaw/skills/skills/ckchzh/docker-helper

Use Cases

• Infrastructure as Code: Quickly generate optimized Dockerfiles for various programming languages (e.g., Node.js, Python, PHP) to standardize project builds.
• Complex Orchestration: Define multi-service architectures using docker-compose, ensuring proper networking, volume mapping, and environment variable management.
• Performance Tuning: Analyze existing images to implement multi-stage builds and layer reduction, significantly decreasing pull times and storage footprints.
• Troubleshooting: Diagnose failed container deployments by analyzing container logs, exit codes, and resource limitations.
• Workflow Automation: Quickly query complex Docker CLI syntax or registry push/pull commands without switching contexts to external documentation.

Example Prompts

1. "docker-helper: Generate a multi-stage Dockerfile for a React frontend and a Node.js Express backend using a single compose file."
2. "docker-helper debug: My container is exiting immediately with code 137. How can I identify if this is an out-of-memory error?"
3. "docker-helper optimize: Here is my current Dockerfile [paste content]. How can I consolidate the RUN instructions to minimize layers?"

Tips & Limitations

• Best Practices: Always pin your base image versions instead of using 'latest' to ensure environment reproducibility.
• Security: Remember to utilize '.dockerignore' to exclude sensitive local files, such as .env credentials or git history, from being built into your images.
• Performance: Place high-frequency changing build steps (like copying source code) after low-frequency steps (like installing dependencies) to maximize Docker layer caching.
• Constraints: This skill is a generative tool; while it provides high-quality boilerplate, complex network security policies or niche kernel configurations may still require manual review by a system administrator.