openssl genrsa -out ssl.key 2048
openssl req -new -config ssl.conf -key ssl.key -out ssl.csr
openssl x509 -req -sha256 -days 3650 -CAcreateserial -CAkey root.key -CA root.crt -in ssl.csr -out ssl.crt

[req]
prompt = no
distinguished_name = req_distinguished_name
x509_extensions = v3_ca

[req_distinguished_name]
CN = 127.0.0.1

[v3_ca]
subjectAltName = @alt_names

[alt_names]
DNS.1 = 127.0.0.1
DNS.2 = ::1
DNS.3 = localhost

openssl req -new -x509 -sha256 -days 3650 -config ssl.conf -key ssl.key -out ssl.crt