fix dockerfile reference to build explorer
fix dockerfile reference to build explorer

ibm-messaging/mq-container,arthurbarr/mq-container,parrobe/mq-container,ibm-messaging/mq-container,arthurbarr/mq-container,ibm-messaging/mq-container,ibm-messaging/mq-container,parrobe/mq-container,parrobe/mq-container,arthurbarr/mq-container