Use official Docker base image

theodolite-benchmarks/uc1-application-flink/Dockerfile

-FROM nicobiernat/flink:1.11-scala_2.12-java_11
+FROM flink:1.12-scala_2.12-java11
 
-ADD build/libs/uc1-application-all.jar /opt/flink/usrlib/artifacts/uc1-application-all.jar
+ADD build/libs/uc1-application-flink-all.jar /opt/flink/usrlib/artifacts/uc1-application-flink-all.jar

theodolite-benchmarks/uc2-application-flink/Dockerfile

-FROM nicobiernat/flink:1.11-scala_2.12-java_11
+FROM flink:1.12-scala_2.12-java11
 
-ADD build/libs/uc2-application-all.jar /opt/flink/usrlib/artifacts/uc2-application-all.jar
\ No newline at end of file
+ADD build/libs/uc2-application-flink-all.jar /opt/flink/usrlib/artifacts/uc2-application-flink-all.jar
\ No newline at end of file

theodolite-benchmarks/uc3-application-flink/Dockerfile

-FROM nicobiernat/flink:1.11-scala_2.12-java_11
+FROM flink:1.12-scala_2.12-java11
 
-ADD build/libs/uc3-application-all.jar /opt/flink/usrlib/artifacts/uc3-application-all.jar
\ No newline at end of file
+ADD build/libs/uc3-application-flink-all.jar /opt/flink/usrlib/artifacts/uc3-application-flink-all.jar
\ No newline at end of file

theodolite-benchmarks/uc4-application-flink/Dockerfile

-FROM nicobiernat/flink:1.11-scala_2.12-java_11
+FROM flink:1.12-scala_2.12-java11
 
-ADD build/libs/uc4-application-all.jar /opt/flink/usrlib/artifacts/uc4-application-all.jar
\ No newline at end of file
+ADD build/libs/uc4-application-flink-all.jar /opt/flink/usrlib/artifacts/uc4-application-flink-all.jar
\ No newline at end of file