nspawn-ubuntu

sudo gpg --no-default-keyring \
         --keyring=/etc/systemd/import-pubring.gpg \
         --fingerprint

echo "-----BEGIN PGP PUBLIC KEY BLOCK-----
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=cO5/
-----END PGP PUBLIC KEY BLOCK-----" | \
sudo gpg --no-default-keyring \
         --keyring=/etc/systemd/import-pubring.gpg \
         --import

echo -e "5\ny\n" | sudo gpg --no-default-keyring \
         --keyring=/etc/systemd/import-pubring.gpg \
         --command-fd 0 \
         --edit-key no-reply@ci.balsys.eu.org \
         trust