diff --git a/conf.d/docker b/conf.d/docker
index ae247c0..c750d8e 100644
--- a/conf.d/docker
+++ b/conf.d/docker
@@ -10,4 +10,4 @@
 #DOCKER_BINARY="/usr/bin/docker"
 
 # any other random options you want to pass to docker
-DOCKER_OPTS=""
+DOCKER_OPTS="-s btrfs -g /mnt/docker-btrfs"
diff --git a/paludis/bashrc b/paludis/bashrc
index f34d3d2..ff15f23 100644
--- a/paludis/bashrc
+++ b/paludis/bashrc
@@ -10,6 +10,7 @@ CXXFLAGS="${CFLAGS}"
 LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu"
 MAKEOPTS="-j8"
 EPATCH_USER_SOURCE=/etc/paludis/patches
+CMAKE_MAKEFILE_GENERATOR="ninja"
 
 I_KNOW_WHAT_I_AM_DOING="yes"
 I_PROMISE_TO_SUPPLY_PATCHES_WITH_BUGS=1