--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/20-build-exim.docker	Tue Aug 25 15:30:13 2015 +0200
@@ -0,0 +1,5 @@
+# Build Exim
+USER eximtest
+WORKDIR /home/eximtest/exim/src
+RUN make -j -l 2
+