Docker - Security
You try to sign an image but get an error: 'No signing key found'. What is the likely cause?
You try to sign an image but get an error: 'No signing key found'. What is the likely cause?
medium📝 Troubleshoot Q6 of 15
Step-by-Step Solution
Solution:
Step 1: Analyze error meaning
'No signing key found' means Docker cannot find your private key to sign the image.Step 2: Identify cause
You must generate or import a signing key before signing images.Final Answer:
You have not generated or imported a signing key -> Option AQuick Check:
Missing signing key = generate/import key first [OK]
Quick Trick: Generate or import signing key before signing images [OK]
Common Mistakes:
- Assuming image name causes signing key error
- Thinking daemon status affects signing key
- Ignoring content trust enablement
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