/zscaler-docker

(Unofficial) procedure to overpass Zscaler's certificate authority issues in Docker container images

zscaler-docker [{deprecated} that procedure showns to be not functional as expected]

(Unofficial) procedure to overpass Zscaler's certificate authority issues in Docker container images

Ref.: http://www.cyberkeeda.com/2021/03/docker-ssl-error-x509-certificate.html

Tested operation system

  • Ubuntu 20.04.3 LTS
  • Docker Server 20.10.8

prerequirements

  • Sudo user
  • Docker Server
  • Docker Client
  • Zscaler chain certificate file (zscaler.pem)

Procedure

If it doesn't exists already,, create the docker certificates dir

sudo mkdir -pv /etc/docker/certs.d

copy .pem as crt in docker certificates file, reload system certificates and restart docker engine

sudo cp -v <path to your zscaler pem certificate file>/zscaler.pem /etc/docker/certs.d/zscaler.crt && sudo update-ca-certificates && sudo service docker restart

... and try to build your docker image