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Docker installation NO_PUBKEY error on ubuntu focal

Vasiliy
・1 min read

If you try to complete official docker installation manual and get this error on ubuntu 20 focal distro:

GPG error: https://download.docker.com/linux/ubuntu focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7EA0A9C3F273FCD8
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You could better try Digital Ocean manual with such way of adding docker gpg key and repo:

# Add key
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
# Add repo
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu focal stable"
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