docker-expert

Automate secure Docker containerization with multi-stage builds and non-root execution.

Updated Apr 14, 2026
One-click install
npx skills add https://github.com/dallay/opencode-docker --skill docker-expert-dallay
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: docker-expert
Source: https://github.com/dallay/opencode-docker/tree/main/config/skills/docker-expert
Command: npx skills add https://github.com/dallay/opencode-docker --skill docker-expert-dallay

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes assets (resource) components.

What problem does it solve?

Docker containerization often struggles with security and efficiency: users need production-ready guidance to build minimal, secure images and orchestrate containers reliably.

Core Features & Use Cases

  • Security-first patterns: enforce non-root users, secrets management, and attack-surface minimization in Dockerfiles and Compose.
  • Performance optimization: promote multi-stage builds, selective layering, and pinned base images to reduce image size and build time.
  • Production-ready orchestration: provide guidelines for robust docker-compose setups and runtime defaults across environments.
  • Use Case: containerize a Node.js app with a minimal runtime image and strict permissions, then compose with a separate database service.

Quick Start

Provide a production-ready Dockerfile and docker-compose setup with a non-root user in mind for a secure, efficient build.

Frequently Asked Questions about docker-expert

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create a production-ready Dockerfile with a non-root user?

To create a production-ready Dockerfile with a non-root user, enforce non-root execution and minimal permissions during the build stage. This approach minimizes the attack surface and secures container runtime.

What's the best way to reduce Docker image size using multi-stage builds?

The best way to reduce Docker image size is using multi-stage builds with selective layering and pinned base images. This technique discards unnecessary build dependencies, yielding minimal and efficient runtime images.

How do I handle secrets management in docker-compose orchestration?

Handling secrets management in docker-compose orchestration requires strict runtime defaults and secure configurations. Enforcing secrets handling across environments protects sensitive data during containerized application deployment.

Why do I need pinned base images for secure containerization?

Pinned base images are needed for secure containerization to guarantee build reproducibility and minimize the attack surface. Pinning prevents unexpected vulnerabilities from upstream image updates in production environments.

Can I use docker-compose for production-ready orchestration with a separate database service?

Yes, you can use docker-compose for production-ready orchestration with a separate database service. Robust compose setups provide reliable runtime defaults and orchestrate multi-service architectures securely across environments.

Does Docker containerization require multi-stage builds for attack-surface minimization?

Docker containerization requires multi-stage builds for attack-surface minimization to effectively isolate build tools from final runtime images. This pattern enforces strict permissions and removes unnecessary binaries from production.