This image has been deprecated in favor of the official elasticsearch image provided and maintained by elastic.co. The upstream images are available to pull via docker.elastic.co/elasticsearch/elasticsearch:[version] like 5.4.2. The images found here will receive no further updates once the 5.6.0 release is available upstream. Please adjust your usage accordingly.
Elastic provides open-source support for Elasticsearch via the elastic/elasticsearch GitHub repository and the Docker image via the elastic/elasticsearch-docker GitHub repository, as well as community support via its forums.