Error response from daemon: Head “https://container-registry.oracle.com/v2/database/rac/manifests/latest”: unauthorized: authentication required

During docker pull command, you are getting the error:

sunny@Oracle1:~/Desktop$ docker pull container-registry.oracle.com/database/rac:latest
Error response from daemon: Head "https://container-registry.oracle.com/v2/database/rac/manifests/latest": unauthorized: authentication required

Cause: Need to login docker with Oracle registry site

Solution: Use docker login command for login to site to download the docker images:

sunny@Oracle1:~/Desktop$ docker login container-registry.oracle.com
Username: sunny@gmail.com
Password: 
WARNING! Your password will be stored unencrypted in /home/sunny/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Login Succeeded

After that when you tried to download the images from Oracle Registry site. It will working fine

Use docker pull command for pull the rac image: ( before pull you have to signin on the website and accept the terms)

sunny@Oracle1:~/Desktop$ docker pull container-registry.oracle.com/database/rac:latest

latest: Pulling from database/rac

401a42e1eb4f: Pull complete 

bcf3e2374f5e: Downloading  1.559GB/5.494GB

d72231ed454e: Download complete 

90d9bb93abc7: Downloading  1.643GB/6.051GB