Internal Registry doesn't work

To avoid race limit in dockerhub, we put postgres image into our internal jfrog and try to fetch from there. We run the test case on jenkins worker and we can pull the internal image from jenkins worker without any issue. So I don't have clue why the testcontainers still seeing the docker hub limits issue.

Code:
private static final PostgreSQLContainer postgres = new PostgreSQLContainer(
DockerImageName.parse("symphony-docker-local.artifactory.eng.vmware.com/postgres:12.0")
.asCompatibleSubstituteFor("postgres"));

Error:

Caused by: org.testcontainers.containers.ContainerFetchException: Can't get Docker image: RemoteDockerImage(imageName=symphony-docker-local.artifactory.eng.vmware.com/postgres:12.0, imagePullPolicy=DefaultPullPolicy())
	at org.testcontainers.containers.GenericContainer.getDockerImageName(GenericContainer.java:1278) ~[testcontainers-1.15.0.jar:na]
	at org.testcontainers.containers.GenericContainer.logger(GenericContainer.java:612) ~[testcontainers-1.15.0.jar:na]
	at org.testcontainers.containers.GenericContainer.doStart(GenericContainer.java:317) ~[testcontainers-1.15.0.jar:na]
	... 62 common frames omitted
Caused by: com.github.dockerjava.api.exception.InternalServerErrorException: Status 500: {"message":"toomanyrequests: You have reached your pull rate limit. You may increase the limit by authenticating and upgrading: https://www.docker.com/increase-rate-limit"}

Den Jenkins-worker-Test mit PostgreSQLContainer unter Verwendung von DockerImageName.parse und asCompatibleSubstituteFor("postgres") reproduzieren. Den Image-Abrufpfad rund um GenericContainer und die gemeldete Docker-Java-Ausnahme nachverfolgen und anschließend überprüfen, dass das konfigurierte JFrog-Image abgerufen wird, ohne auf Docker Hub zurückzufallen oder dessen Rate-Limit auszulösen.