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    22:15
    AskCaptureAnswerHide141End
    Summarized question:
    Clear

    What is the difference between a Docker image and a Docker container? Explain how layers work in a Docker image and how they affect build caching.

    Answer:
    A Docker image is a read-only template that packages your application code, runtime, libraries, and system tools into a single artifact. A Docker container is a running instance of that image — it adds a thin writable layer on top where runtime state like logs, temp files, and in-memory data live. The key difference: images are immutable and shareable, while containers are ephemeral and isolated. You can spin up hundreds of containers from the same image, and each one gets its own writable layer without affecting the base image. Regarding layers — every Dockerfile instruction (FROM, RUN, COPY
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    Live<> Code22:18AskAnalyzeResponse141End
    Summarized question:Clear

    What is the difference between a Docker image and a Docker container?

    Answer:
    A Docker image is a read-only template that packages your code, runtime, and dependencies. A Docker container is a running instance of that image with its own writable layer for runtime state. Images are immutable and shareable; containers are ephemeral and isolated. E
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    codesignal.com/assessment/live
    Screen Shared
    solution.js
    test.js
    1function mergeSort(arr) {
    2if (arr.length <= 1) return arr;
    3
    4const mid = Math.floor(arr.length / 2);
    5const left = mergeSort(arr.slice(0, mid));
    6const right = mergeSort(arr.slice(mid));
    7
    8return merge(left, right);
    9}
    10
    11function merge(left, right) {
    12const result = [];
    13let i = 0, j = 0;
    14
    15while (i < left.length && j < right.length) {
    16if (left[i] <= right[j]) {
    17result.push(left[i++]);
    18} else {
    19result.push(right[j++]);
    20}
    21}
    JavaScript  |  UTF-8Ln 8, Col 32
    Invisible to others
    Live<> Code
    28:45
    AskCaptureAnswerEnd
    Summarized question:

    Implement merge sort and explain the time complexity.

    ★ Answer:
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