diff --git a/README b/README
index 08f8519..a6b3625 100644
--- a/README
+++ b/README
@@ -1,3 +1,59 @@
 Stick is the continuous integration testing suite for Kolab Groupware
 
+Drydocker
+=========
+
+    For execution under Phabricator/Herald/Harbormaster/Drydock, with
+    help of leased hosts that can run Docker containers.
+
+This script should be executed in a leased Drydock host resource (which
+you can limit to platform Atomic), such that a drydock worker user can
+execute:
+
+
+  $ drydocker \
+        --id "${build.id}" \
+        --commit "${buildable.commit}" \
+        --differential "${buildable.revision}" \
+        --phid "${target.phid}" \
+        --uri "${repository.uri}" \
+        --vcs "${repository.vcs}"
+
+The `drydocker` script is supposed to;
+
+  * Derive the package for which the script is executed, using the
+    source code management repository URI passed on by `--uri`.
+
+  * Based on the package name, make some semi-intelligent decisions.
+
+    Such decisions may include replacing `drydocker` itself, should it
+    be concluded the package is #stick.
+
+Future Options
+==============
+
+`--platforms "platform1 platform2 ..."`
+
+    List zero or more names of Docker images to use for continuous
+    integration.
+
+`--build`
+
+    Execute build tests only.
+
+`--functional`
+
+    Execute functional tests only.
+
+`--integration`
+
+    Execute integration tests only.
+
+`--performance`
+
+    Execute performance tests only.
+
+`--unit`
+
+    Execute unit tests only.