Dockerfile-ubi

# https://github.com/GoogleContainerTools/distroless/blob/master/examples/java/Dockerfile
FROM adoptopenjdk:8-jdk-hotspot AS build-env

ARG MAVEN_VERSION=3.6.3
ARG USER_HOME_DIR="/root"
ARG BASE_URL=https://apache.osuosl.org/maven/maven-3/${MAVEN_VERSION}/binaries

RUN mkdir -p /app /usr/share/maven /usr/share/maven/ref \
 && curl -fsSL -o /tmp/apache-maven.tar.gz ${BASE_URL}/apache-maven-${MAVEN_VERSION}-bin.tar.gz \
 && tar -xzf /tmp/apache-maven.tar.gz -C /usr/share/maven --strip-components=1 \
 && rm -f /tmp/apache-maven.tar.gz \
 && ln -s /usr/share/maven/bin/mvn /usr/bin/mvn

ENV MAVEN_HOME /usr/share/maven
ENV MAVEN_CONFIG "$USER_HOME_DIR/.m2"

ADD ./sample-app/ /app
WORKDIR /app
RUN mvn compile 
RUN jar cfe main.jar com.redhat.rahmed.demo.Main -C target/classes .
RUN jar tf main.jar
RUN pwd

FROM registry.redhat.io/ubi8/openjdk-8
COPY --from=build-env /app/main.jar /app/main.jar
WORKDIR /app

CMD ["java", "-jar", "main.jar"]