Dockerfile for sbt

Dockerfile

FROM openjdk:8-jdk

ENV JAVA_OPTS -XX:MaxRAMFraction=1 -XX:MinRAMFraction=1 -XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap

RUN echo 'deb http://dl.bintray.com/sbt/debian /' > /etc/apt/sources.list.d/sbt.list \
    && apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 2EE0EA64E40A89B84B2DF73499E82A75642AC823 \
    && apt-get update \
    && apt-get -y sbt \
    && mkdir /tmp/x \
    && cd /tmp/x \
    && echo 'crossScalaVersions:=Seq("2.10.7","2.11.12","2.12.4")' > build.sbt \
    && mkdir -p src/main/scala \
    && touch src/main/scala/X.scala \
    && sbt +compile \
    && rm -rf /tmp/x