Dockerfile

FROM openjdk:8-alpine

ARG ANT_VERSION=1.10.1
ARG USER_HOME_DIR="/root"
ARG SHA=c6108e7b93df37ee7900a72b84809049271d42c86937004766019d2332201b0e
ARG BASE_URL=http://www-us.apache.org/dist//ant/binaries

RUN mkdir -p /usr/share/ant /usr/share/ant/ref \
  && apk update && apk add curl && apk add git && apk add bash \
  && curl -fsSl -o /tmp/apache-ant.tar.gz ${BASE_URL}/apache-ant-$ANT_VERSION-bin.tar.gz \
  && echo "${SHA}  /tmp/apache-ant.tar.gz" | sha256sum -c - \
  && tar -xzf /tmp/apache-ant.tar.gz -C /usr/share/ant --strip-components=1 \
  && rm -f /tmp/apache-ant.tar.gz \
  && ln -s /usr/share/ant/bin/ant /usr/bin/ant

ENV ANT_HOME /usr/share/ant
ENV ANT_CONFIG $USER_HOME_DIR

COPY ant-entrypoint.sh /usr/local/bin/ant-entrypoint.sh

ENTRYPOINT ["/usr/local/bin/ant-entrypoint.sh"]
CMD ["ant"]