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FROM java:8-jre-alpine

# Install requirements
RUN apk add --no-cache bash snappy

# Configure Flink version
ARG FLINK_VERSION=1.0.3
ARG HADOOP_VERSION=27
ARG SCALA_VERSION=2.11

# Install build dependencies and flink
RUN set -x && \
  apk --update add --virtual build-dependencies curl && \
  curl -s $(curl -s https://www.apache.org/dyn/closer.cgi\?as_json\=1 | \
  awk '/preferred/ {gsub(/"/,""); print $2}')flink/flink-${FLINK_VERSION}/flink-${FLINK_VERSION}-bin-hadoop${HADOOP_VERSION}-scala_${SCALA_VERSION}.tgz | \
  tar xvz -C /usr/local/ && \
  ln -s /usr/local/flink-$FLINK_VERSION /usr/local/flink && \
  sed -i -e "s/echo \$mypid >> \$pid/echo \$mypid >> \$pid \&\& wait/g" /usr/local/flink/bin/flink-daemon.sh && \
  apk del build-dependencies && \
  rm -rf /var/cache/apk/*

ENV FLINK_HOME /usr/local/flink
ENV PATH $PATH:$FLINK_HOME/bin

# Configure container
ADD docker-entrypoint.sh $FLINK_HOME/bin/
ENTRYPOINT ["docker-entrypoint.sh"]
CMD ["sh", "-c"]