diff --git a/Dockerfile b/Dockerfile
index 59c5898..992945c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,2 +1,11 @@
-FROM sutty/monit:latest
+FROM sutty/sdk:latest
 MAINTAINER "f <f@sutty.nl>"
+
+COPY ./build.sh /usr/local/bin/build
+RUN chmod 755 /usr/local/bin/build
+RUN echo 'https://alpine.sutty.nl/alpine/v3.12/sutty' >> /etc/apk/repositories
+RUN wget https://alpine.sutty.nl/alpine/sutty.pub -O /etc/apk/keys/alpine@sutty.nl-5ea884cd.rsa.pub
+RUN apk update || true
+
+USER builder
+ENTRYPOINT /usr/local/bin/build
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..41f87b7
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+set -e
+
+export PATH=/usr/lib/ccache/bin:$PATH
+
+cd /home/builder/package
+
+abuild checksum
+abuild -r