openssl x509 -inform PEM -in root.pem -out root.crt

/etc/ca-certificates/trust-source/anchors/

/etc/ssl/certs/

/usr/share/ca-certificates

sudo cp ./*.pem /etc/ssl/certs/
sudo cp ./*.crt /etc/ca-certificates/trust-source/anchors/

sudo update-ca-trust
sudo trust extract-compat
sudo update-ca-trust extract

chromium --ignore-certificate-errors