Dear Connect:Direct for UNIX customer,

Container images are no longer available on Fix Central. Please find this iFix
in container image registry, also known as IBM Entitled Registry, where 
Connect:Direct for UNIX (CDU) container images reside. 

You can pull the CDU container image from IBM Entitled registry into your 
cluster or download and load the image into your registry. 

Please follow the online Knowledge Center documentation link below for more 
details:

https://www.ibm.com/docs/en/connect-direct/6.1.0?topic=tasks-downloading-certified-container-software-image