PIPELINE: Add version output to test execution

.docker/Dockerfile

@@ -31,5 +31,8 @@ CMD /wait-for-it.sh caosdb-server:10443 -t 500 -- \
     # ... install pylinkahead.ini and the server-side scripts
     cp /git/.docker/sss_pylinkahead.ini /scripting/home/.pylinkahead.ini && \
     cp -r /git/resources /scripting/bin-debug && \
+    # ... put out general version information
+    python3 --version && \
+    python3 -c "import linkahead; print(linkahead.version.version)" && \
     # ... and run tests
     pytest --cov=linkahead -vv tests