Test against Docker 1.8.0 RC3

Signed-off-by: Aanand Prasad <[email protected]>

Dockerfile

@@ -48,11 +48,13 @@ RUN set -ex; \
     rm -rf pip-7.0.1; \
     rm pip-7.0.1.tar.gz
 
-ENV ALL_DOCKER_VERSIONS 1.7.1
+ENV ALL_DOCKER_VERSIONS 1.7.1 1.8.0-rc3
 
 RUN set -ex; \
     curl https://get.docker.com/builds/Linux/x86_64/docker-1.7.1 -o /usr/local/bin/docker-1.7.1; \
-    chmod +x /usr/local/bin/docker-1.7.1
+    chmod +x /usr/local/bin/docker-1.7.1; \
+    curl https://test.docker.com/builds/Linux/x86_64/docker-1.8.0-rc3 -o /usr/local/bin/docker-1.8.0-rc3; \
+    chmod +x /usr/local/bin/docker-1.8.0-rc3
 
 # Set the default Docker to be run
 RUN ln -s /usr/local/bin/docker-1.7.1 /usr/local/bin/docker