Create own Certificate Authority with Step CA Docker image

Create directories to put docker files

mkdir -p /opt/step-ca/data
chown 1000:1000 /opt/step-ca/data
chmod 700 /opt/step-ca/data

 docker run -it -v /opt/step-ca/data:/home/step smallstep/step-ca step ca init --acme

docker run -it -v /opt/step-ca/data:/home/step smallstep/step-ca bash
echo -n "password" > secrets/password
chmod 600 secrets/password

/opt/step-ca/data/config/ca.json

.
.
"authority": {
  "provisioners": [
      {
.
.
        "encryptedKey": "<secret key already set by init>",
         "claims": {
           "minTLSCertDuration": "8760h0m0s",
           "maxTLSCertDuration": "17520h0m0s",
           "defaultTLSCertDuration": "8760h0m0s",
           "enableSSHCA": false,
           "disableRenewal": false,
           "allowRenewalAfterExpiry": false
         },
         "options": {
           "x509": {},
           "ssh": {}
         }
       },
       {
         "type": "ACME",
         "name": "heitmann",
         "claims": {
           "maxTLSCertDuration": "2160h0m0s",
           "defaultTLSCertDuration": "2160h0m0s",
           "enableSSHCA": true,
           "disableRenewal": false,
           "allowRenewalAfterExpiry": false
         },
         "options": {
           "x509": {},
           "ssh": {}
         }
      }
   ],
.   
.