//download [updated].docker.com/linux/ubuntu Kinetic Inrelease' Is Not Signed: The Repository 'https

: Ubuntu 22.10 (Kinetic) is no longer supported. Repositories for EOL versions are often moved or archived, causing the signature check to fail.

: If your root partition or Docker's allocated disk space is full, apt may fail to download and verify the signature file, leading to a misleading "not signed" error. : Ubuntu 22

When apt cannot find a valid signature file ( InRelease ) for a repository, it blocks the update to prevent you from installing potentially malicious or unauthenticated software. Common Causes of the "Not Signed" Error When apt cannot find a valid signature file

Sometimes local corruption or full storage causes this error. Clear the apt cache and check your disk usage: Repository is not signed in docker build - Stack Overflow How to Fix the Error 1

: If you are behind a corporate proxy, apt might be unable to reach the signature server even if curl works, requiring specific proxy configuration in /etc/apt/apt.conf.d/ . How to Fix the Error 1. Upgrade to a Supported Ubuntu Version

echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu jammy stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null Use code with caution. 4. Clear Cache and Check Disk Space