create_certs.sh

curl -Lo ~/.local/bin/cfssljson https://github.com/cloudflare/cfssl/releases/download/v1.6.3/cfssljson_1.6.3_linux_amd64 
curl -Lo ~/.local/bin/cfssl https://github.com/cloudflare/cfssl/releases/download/v1.6.3/cfssl_1.6.3_linux_amd64 
chmod 755 ~/.local/bin/cfssl*

# Creating the Certificate Authority
cat > ca-csr.json << _EOF_
{
  "CN": "Prototype Test Certificate Authority",
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "US",
      "L": "Columbia",
      "O": "Prototype",
      "OU": "Test Certificate Authority",
      "ST": "Maryland"
    }
  ]
}
_EOF_
cfssl gencert -initca ca-csr.json | cfssljson -bare ca