Use Dockerfile LABEL construct instead of deprecated MAINTAINER construct
# set base Docker image to AdoptOpenJDK Alpine Docker image
FROM adoptopenjdk/openjdk8:jdk8u192-b12-alpine
-MAINTAINER WSO2 Docker Maintainers "dev@wso2.org"
+LABEL maintainer="WSO2 Docker Maintainers <dev@wso2.org>"
# User details
ARG USER=wso2ei
