diff --git a/Dockerfile b/Dockerfile
index 01dd5ce..39a0eee 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,14 @@
 # vim:set ft=dockerfile:
-FROM gliderlabs/alpine:2.7
+FROM gliderlabs/alpine:edge
 
 MAINTAINER Andrius Kairiukstis <andrius@kairiukstis.com>
 
-RUN apk add --update less curl ngrep \
-  asterisk asterisk-curl asterisk-speex asterisk-sample-config \
-&&  rm -rf /var/cache/apk/*
+RUN apk add --update less curl sngrep ngrep \
+      asterisk asterisk-curl asterisk-speex asterisk-sample-config \
+&&  rm -rf /var/cache/apk/* /tmp/* /var/tmp/*
+
+# start asterisk so it creates missing folders and initializes astdb
+RUN asterisk && sleep 5
 
 ADD docker-entrypoint.sh /docker-entrypoint.sh