---
title: "Discussion on \"Day 21 Task: Important Docker Interview Questions\" | Hashnode"
description: "Discussion on \"Day 21 Task: Important Docker Interview Questions\". Key Docker topics: Images, Containers, Engine, COPY vs ADD, CMD vs RUN, networking, and persistent storage"
url: "https://hashnode.com/posts/day-21-task-important-docker-interview-questions/67e81334dfbb76f3be95a791"
---

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# [Day 21 Task: Important Docker Interview Questions](https://90-daysofdevops.hashnode.dev/day-21-task-important-docker-interview-questions?utm_source=hashnode&utm_medium=feed)

Key Docker topics: Images, Containers, Engine, COPY vs ADD, CMD vs RUN, networking, and persistent storage

Mar 29, 2025 · 5 min read · 90-daysofdevops.hashnode.dev  
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-   [#interview](https://hashnode.com/tag/interview)
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## Written by

[Shubhranshu Ransingh](https://hashnode.com/@ShubhranshuRanasing)

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DO IT.

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