Now if you are trying to do online installation with out internet access than these issues will happen.
Anyway, another issue may show :
When I run portal.sh an error saying that network portal_private was not found when creating the portal_rabbitmq service
Release : 4.3.2
Component : API PORTAL
This is a docker error. This happens when you try to create a stack when the network is not running yet.
This is a docker error. This happens when you try to create a stack when the network is not running yet. You may be creating the stack to quickly for the machine. This could be a spec issue on the machine its self or a networking issue. I would review your architecture just to make sure it is all to spec.
You may also go with offline installation option described here : https://techdocs.broadcom.com/content/broadcom/techdocs/us/en/ca-enterprise-software/layer7-api-management/api-developer-portal/4-3-2/install-configure-and-upgrade/install-and-configure-api-portal.html