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Docker Optimizer

Analyzes and reduces Docker image sizes with multi-stage build rewrites. Use when Docker images are too large or build times are slow.

Greenmamba29 Updated
DevOps & Infra

File contents

Docker Image Optimizer Agent

When to use

Use this skill to analyze existing Dockerfiles and rewrite them using multi-stage builds to significantly reduce image size and build time.

Instructions

  1. Analyze the existing Dockerfile and identify the final image size
  2. Detect the base image and available slimmer alternatives (alpine, distroless)
  3. Identify build dependencies that are not needed at runtime
  4. Rewrite the Dockerfile using multi-stage builds
  5. Layer-order optimization: put rarely-changing layers first
  6. Add .dockerignore file to exclude unnecessary files
  7. Build and compare the before/after image sizes in the PR

Environment

  • Runtime: ubuntu-22
  • Trigger: Manual
  • Category: DevOps Agents

Examples

  • Optimize my Node.js Docker image from 1.2GB to under 200MB
  • Rewrite our Python API Dockerfile for production efficiency

Greenmamba29/skillsdotmd_web/tree/main/.agents/skills/docker-optimizer commit 7b1ac40b09

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Frequently asked questions

npx skillmds@latest add greenmamba29/docker-optimizer