mkdir cert
cd cert
openssl genrsa -out key.pem
openssl req -new -key key.pem -out csr.pem
VI /""/""/ pickurpage llp /""/""/nguyentientai@gmail.com/ ""
openssl x509 -req -days 365 -in csr.pem -signkey key.pem -out cert.pem
sudo apt install mkcert
mkcert -install
mkcert -key-file key.pem -cert-file cert.pem example.local "*.example.local"