Leave the docker image .tar files in the weave directory

Making things into /var/tmp is a bit odd, and this works better in
the context of the containerized build.

.gitignore

@@ -32,3 +32,6 @@ weavedns/weavedns
 tools/bin
 tools/build
 releases
+weave.tar
+weavedns.tar
+weavetools.tar

Makefile

@@ -14,9 +14,9 @@ WEAVETOOLS_EXES=tools/bin
 WEAVER_IMAGE=$(DOCKERHUB_USER)/weave
 WEAVEDNS_IMAGE=$(DOCKERHUB_USER)/weavedns
 WEAVETOOLS_IMAGE=$(DOCKERHUB_USER)/weavetools
-WEAVER_EXPORT=/var/tmp/weave.tar
-WEAVEDNS_EXPORT=/var/tmp/weavedns.tar
-WEAVETOOLS_EXPORT=/var/tmp/weavetools.tar
+WEAVER_EXPORT=weave.tar
+WEAVEDNS_EXPORT=weavedns.tar
+WEAVETOOLS_EXPORT=weavetools.tar
 
 all: $(WEAVER_EXPORT) $(WEAVEDNS_EXPORT) $(WEAVETOOLS_EXPORT)
 

site/building.md

@@ -47,7 +47,7 @@ $ make
 This will build the weave components and package them into three
 Docker images (`zettio/weave`, `zettio/weavedns`, and
 `zettio/weavetools`).  These are then exported (as
-`/var/tmp/weave.tar`, `weavends.tar` and `weavetools.tar`).
+`weave.tar`, `weavends.tar` and `weavetools.tar`).
 
 ## Building in a Docker container