Transferring jira users to crowd in jira-crowd-postgresql containers running in docker

I have two servers running docker containers. jira and postgres works in a container with docker compose. In the other, the crowd works. Jira already hosts active users. I want to distribute these users through the crowd. So I want to transfer users on jira to crowd. I am using Atlassian product importer for this process. However, the Atlassian product importer cannot access JIRA’s database.


Crowd container


Jira Container

Postgres Container

I follow the steps in this link. But the connection fails. I don’t understand why. Did the error cause products to work with the docker? or is it to be on different servers? Can you help with solving this problem?

I’ve checked the contact information over and over again and I’m sure it’s correct.