Add test to clojure image

infrastructure/clojure/test/Dockerfile

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+FROM domaindrivenarchitecture/clojure
+
+RUN apt update
+RUN apt -yqq --no-install-recommends --yes install curl default-jre-headless
+
+RUN curl -L -o /tmp/serverspec.jar \
+    https://github.com/DomainDrivenArchitecture/dda-serverspec-crate/releases/download/2.0.0/dda-serverspec-standalone.jar
+
+COPY serverspec.edn /tmp/serverspec.edn
+
+RUN java -jar /tmp/serverspec.jar /tmp/serverspec.edn -v

infrastructure/clojure/test/serverspec.edn

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+{}