Self signed certificate with own ca

cert.sh

openssl req -new -x509 -days 720 -extensions v3_ca -keyout my-ca.key -out my-ca.crt
openssl genrsa -out server.key
openssl req -out server.csr -key server.key -new
openssl x509 -req -in server.csr -CA my-ca.crt -CAkey my-ca.key -CAcreateserial -out server.crt -days 720