Bump release to 0.9.0, disable building x86/ x86-64 (broken atm)

Dockerfile

@@ -3,10 +3,11 @@ MAINTAINER Markus Lindenberg <markus@lindenberg.io>
 
 ENV GLUON_SITE ffdo
 ENV GLUON_TAG v2016.1.2
-ENV GLUON_RELEASE 0.8.1
+ENV GLUON_RELEASE 0.9.0
 ENV GLUON_BRANCH stable
 ENV GLUON_BROKEN 1
-ENV GLUON_TARGETS ar71xx-generic ar71xx-nand mpc85xx-generic x86-generic x86-64
+#ENV GLUON_TARGETS ar71xx-generic ar71xx-nand mpc85xx-generic x86-generic x86-64
+ENV GLUON_TARGETS ar71xx-generic ar71xx-nand mpc85xx-generic
 
 ENV DEBIAN_FRONTEND noninteractive
 ENV DEBIAN_PRIORITY critical