[Solved] Find the mistake in this Dockerfile that causes a larger image size:FROM ubuntu RUN apt-get update RUN apt-get install -y curl RUN apt-get clean && rm -rf /var/lib/apt/lists/* | Docker

Docker - Image Optimization

Find the mistake in this Dockerfile that causes a larger image size:

FROM ubuntu
RUN apt-get update
RUN apt-get install -y curl
RUN apt-get clean && rm -rf /var/lib/apt/lists/*

Aapt-get clean command is incorrect

BMissing --no-cache flag

CBase image should be Alpine

Dapt-get update and install should be in one RUN command

Step-by-Step Solution

Solution:

Step 1: Understand layer creation
Each RUN creates a layer; separate update and install create extra layers.
Step 2: Combine commands to reduce layers
Combining update and install in one RUN reduces image size.
Final Answer:
Separate RUN commands for update and install increase image size. -> Option D
Quick Check:
Combine commands to reduce layers [OK]

Quick Trick: Combine update and install in one RUN to reduce layers [OK]

Common Mistakes:

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