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Summary
A short tutorial introducing Dive-In, a Docker Desktop extension that wraps the open-source Dive CLI tool in a graphical UI. Dive-In lets users analyze container image layers, see which files contribute to image size, spot wasted space, and get an efficiency score — all without leaving Docker Desktop.
介紹 Dive-In Docker Desktop 擴充功能的短篇教學,將 Dive CLI 工具包裝為圖形介面,讓使用者無需離開 Docker Desktop 即可分析映像層、找出佔用空間的檔案並取得效率評分。
Key Points
- Dive 功能:逐層分解映像內容、顯示各層大小、計算潛在浪費空間與效率評分
- Dive-In 新增:將 CLI/TUI 轉為 Docker Desktop GUI;顯示最大檔案排行、層資訊、關鍵指標
- 安裝:Extensions Marketplace 搜尋 Dive-In,或
docker extension install prakhar1989/dive-in - 限制:目前不顯示 dangling images(repo tag 為 “none” 的映像)
Insights
- 與方法論文章的互補:DevOpsCube 的 6 種優化方法告訴你「什麼該做」;Dive-In 告訴你「從哪裡開始」——兩篇合用才是完整的優化工作流程
- GUI 降低入門門檻:Dive CLI 的 TUI 對部分使用者不友善,Dive-In 的圖形化介面讓 Docker 優化分析進入日常開發流程
Connections
Raw Excerpt
“Dive takes this information and does the following: Breaks down the image contents in the Docker image layer by layer. Shows the contents of each layer in detail. Shows how much space was potentially wasted. Shows the efficiency score of the image.”