diff --git a/Dockerfile b/Dockerfile
index f3d6e7fa..ff99f998 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,5 +3,4 @@ RUN apt-get update && apt-get install -y inotify-tools
 WORKDIR /elixir-koans
 ADD . /elixir-koans/
 RUN mix local.hex --force
-RUN mix deps.get
-CMD mix meditate
+CMD ["bash", "docker-meditate.sh"]
diff --git a/docker-meditate.sh b/docker-meditate.sh
new file mode 100755
index 00000000..2d306968
--- /dev/null
+++ b/docker-meditate.sh
@@ -0,0 +1,4 @@
+#!/bin/env bash
+
+mix deps.get
+mix meditate
diff --git a/mix.lock b/mix.lock
index d7a007ee..52f524ba 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1 +1 @@
-%{"file_system": {:hex, :file_system, "0.2.2", "7f1e9de4746f4eb8a4ca8f2fbab582d84a4e40fa394cce7bfcb068b988625b06", [], [], "hexpm"}}
+%{"file_system": {:hex, :file_system, "0.2.2", "7f1e9de4746f4eb8a4ca8f2fbab582d84a4e40fa394cce7bfcb068b988625b06", [:mix], [], "hexpm"}}