new Dockerfile to run locally the test on an Ubuntu 20.04 system

docker/Dockerfile.ubuntu_groovy

@@ -0,0 +1,13 @@
+# Build time
+FROM ubuntu:groovy as build
+
+ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update
+
+RUN apt-get -y install g++ libssl-dev libz-dev make python ninja-build
+RUN apt-get -y install cmake
+
+COPY . /opt
+WORKDIR /opt
+
+RUN ["make", "test"]