Create self-signed certificate

create_server_cert_and_key.sh

#!/usr/bin/env bash
openssl req -newkey rsa:2048 -days 3650 -x509 -nodes -keyout server.key -new -out server.crt -config ./openssl-cert.cnf -sha256

openssl-cert.cnf

[req]
default_bits = 2048
prompt = no
default_md = sha256
x509_extensions = v3_req
distinguished_name = dn

[dn]
C = BE
ST = Antwerp
L = Antwerp
O = IT
OU = IT Department
emailAddress = it@example.com
CN = localhost

[v3_req]
subjectAltName = @alt_names

[alt_names]
DNS.1 = *.localhost
DNS.2 = localhost