diff --git a/Dockerfile b/Dockerfile
index 59c5898..6695989 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,2 +1,21 @@
 FROM sutty/monit:latest
 MAINTAINER "f <f@sutty.nl>"
+
+RUN apk add --no-cache alpine-sdk
+RUN adduser -s /bin/sh -D builder
+RUN adduser builder abuild
+
+# Generate keys
+#
+# TODO: It doesn't matter if we publish them because they're private
+# repositories.
+USER builder
+RUN abuild-keygen
+RUN echo /home/builder/.abuild/*.rsa \
+  | sed "s/^/PACKAGER_PRIVKEY=/" \
+  >> /home/builder/.abuild/abuild.conf
+
+# Install keys and local repository
+USER root
+RUN cp /home/builder/.abuild/*.pub /etc/apk/keys/
+RUN echo /home/builder/packages/home >> /etc/apk/repositories