fix Dockerfile per snyk issues

workflows/Dockerfile

@@ -1,12 +1,13 @@
-FROM openjdk:8-jdk as buildContainer
+FROM ubuntu:latest as buildContainer
 WORKDIR "/opt/stitcher"
 
 RUN apt update
 RUN apt-get update
+RUN apt-get install -y openjdk-8-jdk
 RUN apt-get install sudo
 RUN apt-get install nano
 RUN sudo apt-get install graphviz -y
-RUN sudo apt-get install zip
+RUN sudo apt-get install -y zip
 RUN apt-get install apt-transport-https curl gnupg -yqq
 RUN echo "deb https://repo.scala-sbt.org/scalasbt/debian all main" | sudo tee /etc/apt/sources.list.d/sbt.list
 RUN echo "deb https://repo.scala-sbt.org/scalasbt/debian /" | sudo tee /etc/apt/sources.list.d/sbt_old.list
@@ -32,5 +33,6 @@ RUN pip install snakemake
 RUN pip install pulp==2.7
 RUN pip install xlrd
 
+ENV SBT_OPTS="-Dsbt.rootdir=true"
 CMD export PATH=${HOME}/edirect:${PATH} && bash
 #CMD snakemake --cores=all