FROM openjdk:7

RUN apt-get update -yqq && apt-get install -yqq curl

RUN curl -L https://downloads.sourceforge.net/project/checkstyle/checkstyle/8.0/checkstyle-8.0-all.jar > /checkstyle.jar

ADD checkstyle.sh /usr/bin/checkstyle
RUN chmod +x /usr/bin/checkstyle