dd dokcerfile for test image

tests/Dockerfile

@@ -0,0 +1,8 @@
+FROM node:lts
+
+ENV DEBIAN_FRONTEND=noninteractive
+# Install and update the system
+RUN apt-get -q update && apt-get -qy upgrade && apt-get -qy install postgresql-client
+# Clean up APT when done.
+RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+