Prepare default setup for 1.6.0 version

Dockerfile

@@ -3,4 +3,17 @@ FROM argilla/argilla-quickstart:v1.5.0
 # Define datasets to preload: full=all datasets, single=one dataset, and none=no datasets.
 ENV LOAD_DATASETS=single
 
-CMD whoami && /start_quickstart_argilla.sh
+# Uncomment the next section to keep backward compatibility with previous versions
+## Following variables are used for backward compatibility with the previous security setup for the quickstart image
+#ENV ADMIN_USERNAME="team"
+#ENV ADMIN_API_KEY="team.apikey"
+## The password has a minimum length of 8. Passwords with lower lengths will fail.
+#ENV ADMIN_PASSWORD=12345678
+#
+#ENV ANNOTATOR_USERNAME="argilla"
+## The password has a minimum length of 8. Passwords with lower lengths will fail.
+#ENV ANNOTATOR_PASSWORD=12345678
+#
+#ENV ARGILLA_WORKSPACE="team"
+
+CMD /start_quickstart_argilla.sh