OpenJDK8-alpine3.12

#====================================
# Alpine Linux - OpenJDK8 Dockerfile
#====================================

FROM alpine:3.12

USER root

RUN (apk fix --no-cache || echo "cannot fix.") && \
    (apk upgrade --no-cache || echo "cannot upgrade.") && \
    (apk cache -v  clean || echo "cannot clean cache." ) && \
     apk add --no-cache --update --upgrade openjdk8 busybox-suid rpm bash jq openssl \
     unzip sudo curl && \
     rm -rf /tmp/* /var/cache/apk /var/lib/apk /etc/apk/cache && \
     echo "securerandom.source=file:/dev/urandom" >> /usr/lib/jvm/default-jvm/jre/lib/security/java.security

ENV JAVA_HOME=/usr/lib/jvm/java-1.8-openjdk
ENV PATH="$JAVA_HOME/bin:${PATH}"

WORKDIR /tmp

CMD ["/bin/sh"]