Dockerfile

# s2i-java
FROM openshift/base-centos7

# TODO: Put the maintainer name in the image metadata
LABEL maintainer="Dan Shao <shaodan.cn@gmail.com>"

# TODO: Rename the builder environment variable to inform users about application you provide them
# ENV BUILDER_VERSION 1.0

# TODO: Set labels used in OpenShift to describe the builder image
LABEL io.k8s.description="Platform for building(Maven Wrapper, Gradle Wrapper) and running Java applications " \
      io.k8s.display-name="Java S2I Builder" \
      io.openshift.expose-services="8080:http" \
      io.openshift.tags="builder,java,s2i,maven,gradle"

# TODO: Install required packages here:
# RUN yum install -y ... && yum clean all -y
# Install Java
RUN INSTALL_PKGS="java-1.8.0-openjdk java-1.8.0-openjdk-devel" && \
    yum install -y $INSTALL_PKGS && \
    rpm -V $INSTALL_PKGS && \
    yum clean all -y && \
    mkdir -p /opt/s2i/destination

# TODO (optional): Copy the builder files into /opt/app-root
# COPY ./<builder_folder>/ /opt/app-root/

# TODO: Copy the S2I scripts to /usr/libexec/s2i, since openshift/base-centos7 image
# sets io.openshift.s2i.scripts-url label that way, or update that label
COPY ./s2i/bin/ /usr/libexec/s2i

# TODO: Drop the root user and make the content of /opt/app-root owned by user 1001
RUN chown -R 1001:1001 /opt/app-root

# This default user is created in the openshift/base-centos7 image
USER 1001

# TODO: Set the default port for applications built using this image
EXPOSE 8080

# TODO: Set the default CMD for the image
CMD ["/usr/libexec/s2i/usage"]