openssl req -nodes -newkey rsa:1024 -out myreq.pem -keyout privatekey.pem
openssl req -in myreq.pem -x509 -key privatekey.pem -out mycert.pem -days 365
https://blog.csdn.net/haowai501/article/details/80269807
https://blog.filippo.io/mkcert-valid-https-certificates-for-localhost/