sudo update-ca-certificates https://superuser.com/questions/437330/how-do-you-add-a-certificate-authority-ca-to-ubuntu
PHP.INI curl.cainfo =/usr/local/share/ca-certificates/mycustom/cacert.pem download cacert.pem http://curl.haxx.se/ca/cacert.pem tutorial https://cheapsslsecurity.com/blog/ssl-certificate-problem-unable-to-get-local-issuer-certificate/