Parse my_ip_address:2376: first path segment in URL cannot contain colon

Hi there
I am using gitlab.com
I have variables $DOCKER_TLSHOST_DEV and $DOCKER_TLSPORT

My job failed with error
$ docker -H $DOCKER_TLSHOST_DEV:$DOCKER_TLSPORT --tlsverify $REGISTRY_LOGIN_RO
parse my_ip_address:2376: first path segment in URL cannot contain colon