diff --git a/appliance/ubuntu/.dockignore b/appliance/ubuntu/.dockignore
new file mode 100644
index 0000000..6d1a6a4
--- /dev/null
+++ b/appliance/ubuntu/.dockignore
@@ -0,0 +1,4 @@
+tmp*
+.tmp
+.sw?
+README.*
diff --git a/appliance/ubuntu/README.md b/appliance/ubuntu/README.md
new file mode 100644
index 0000000..6424ac9
--- /dev/null
+++ b/appliance/ubuntu/README.md
@@ -0,0 +1,13 @@
+Note: we currently focus on the Alpine container, because
+
+- Alpine is frequently used in docker due to the small footprint
+- We have a firm grip on Alpine packaging and can quickly build
+  ourselfs all components that we need (quick turn-around cycle)
+- the appliance container is not yet mature, so duplicating work
+  sounds counter-productive
+
+Once the Alpine container is really production grade and if there is
+demand for others, we plan to create appliances with other base OS.
+Ubuntu and CentOS would be choices.
+
+see also: https://github.com/rsyslog/rsyslog-docker/issues/3