You try to scan a private image with docker scan private/image:latest but get an authentication error. How can you fix this?

medium📝 Troubleshoot Q7 of 15

Docker - Security

You try to scan a private image with docker scan private/image:latest but get an authentication error. How can you fix this?

ARestart Docker daemon

BRebuild the image locally

CUse <code>docker scan --no-auth</code>

DLog in to the Docker registry using <code>docker login</code>

Step-by-Step Solution

Solution:

Step 1: Understand authentication error cause
Private images require authentication to access for scanning.
Step 2: Fix by logging in
Running docker login authenticates your client to the registry.
Final Answer:
Log in to the Docker registry using docker login -> Option D
Quick Check:
Authentication error fixed by docker login = A [OK]

Quick Trick: Authenticate with docker login before scanning private images [OK]

Common Mistakes:

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