diff --git a/Dockerfile b/Dockerfile
index 0f558e1..277dbf9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # -*- sh -*-
 
-FROM ubuntu:quantal
+FROM ubuntu:13.10
 
 RUN echo "deb http://archive.ubuntu.com/ubuntu quantal main universe" >> /etc/apt/sources.list
 
diff --git a/Makefile b/Makefile
index 213383e..a79c312 100644
--- a/Makefile
+++ b/Makefile
@@ -8,4 +8,4 @@ fmt:
 
 # Run the test in an isolated environment.
 fulltest:
-	sudo docker build -t ActiveState/tail .
+	docker build -t ActiveState/tail .