try to add git to the image

3nids · m-kuhn · commit 10079e85d97d · 2017-09-15T15:37:17.000+02:00
diff --git a/.docker/Dockerfile b/.docker/Dockerfile
@@ -103,4 +103,6 @@ ENV QT_SELECT=5
 # RUN ${CC} --version
 # RUN ${CXX} --version
 
+RUN apt-get install -y git
+
 CMD /root/QGIS/.ci/travis/linux/docker-build-test.sh
