SSL error with yum registry in oraclelinux:7-slim about container-images HOT 6 CLOSED

C:\>docker run --rm -it oraclelinux:7-slim curl -vvI https://yum.oracle.com
* Could not resolve host: yum.oracle.com; Name or service not known
* Closing connection 0
curl: (6) Could not resolve host: yum.oracle.com; Name or service not known

C:\>docker run --rm -it oraclelinux:7-slim curl -vvI https://yum.oracle.com
* About to connect() to yum.oracle.com port 443 (#0)
*   Trying 23.195.64.183...
* Connected to yum.oracle.com (23.195.64.183) port 443 (#0)
* Initializing NSS with certpath: sql:/etc/pki/nssdb
*   CAfile: /etc/pki/tls/certs/ca-bundle.crt
  CApath: none
* Server certificate:
*       subject: CN=yum.oracle.com,O=Oracle Corporation,L=Redwood Shores,ST=California,C=US
*       start date: Jun 21 03:02:54 2019 GMT
*       expire date: Jul 05 03:02:54 2019 GMT
*       common name: yum.oracle.com
*       issuer: CN="Zscaler Intermediate Root CA (zscalertwo.net) (t) ",OU=Zscaler Inc.,O=Zscaler Inc.,ST=California,C=US
* NSS error -8179 (SEC_ERROR_UNKNOWN_ISSUER)
* Peer's Certificate issuer is not recognized.
* Closing connection 0
curl: (60) Peer's Certificate issuer is not recognized.
More details here: http://curl.haxx.se/docs/sslcerts.html

curl performs SSL certificate verification by default, using a "bundle"
 of Certificate Authority (CA) public keys (CA certs). If the default
 bundle file isn't adequate, you can specify an alternate file
 using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
 the bundle, the certificate verification probably failed due to a
 problem with the certificate (it might be expired, or the name might
 not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
 the -k (or --insecure) option.