Add snapshot repository for docker dependency
diff --git a/rackspace/pom.xml b/rackspace/pom.xml
index 1446e64..e76fdba 100644
--- a/rackspace/pom.xml
+++ b/rackspace/pom.xml
@@ -29,6 +29,16 @@
     <jclouds.version>1.9.1</jclouds.version>
   </properties>
 
+  <repositories>
+    <repository>
+      <id>apache-snapshots</id>
+      <url>https://repository.apache.org/content/repositories/snapshots</url>
+      <snapshots>
+        <enabled>true</enabled>
+      </snapshots>
+    </repository>
+  </repositories>
+
   <dependencies>
     <!-- jclouds dependencies -->
     <dependency>