Add simple `ci.sh` script as container entry point

Change-Id: Ibb7e65bff8128199d744a607e841c02a53848099
Signed-off-by: Nico Huber <nico.h@gmx.de>
diff --git a/Dockerfile b/Dockerfile
index d7b985f..9051cf8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,3 +15,6 @@
 
 RUN cd libhwbase && git fetch origin refs/changes/75/475/1 && git rebase FETCH_HEAD
 RUN cd libhwbase && make -j$(nproc) cnf=configs/linux install
+
+COPY ci.sh /
+ENTRYPOINT ["/bin/sh", "/ci.sh"]