fixing java issues

nlp/WroclawCRFTaggerService/Dockerfile

@@ -1,9 +1,10 @@
 FROM riomus/wroclawcrftagger
 
-RUN apt-get update  &&\
-	apt-get install -yq default-jre maven rpm alien wget && \
+RUN apt-get update && apt-get install -yq software-properties-common
+RUN add-apt-repository ppa:jonathonf/openjdk -y && apt-get update &&\
+	apt-get install -yq openjdk-8-jdk maven rpm alien wget && \
  	rm -rf /var/lib/apt/lists/*
-
+RUN update-alternatives  --set java /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
 RUN mkdir -p /tmp/wcrft2
 
 RUN wget https://github.com/riomus/polish-sentiment/blob/master/nlp/WroclawCRFTaggerService/assets/wcrft2-java-wrapper-rpm-1.0-SNAPSHOT20141214143930.amd64.rpm?raw=true -O /tmp/wcrft2/wcrft2-java-wrapper.rpm