add docker files, improve dbus interface

.docker/build-arch.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -e
+
+rm -rf build-arch
+mkdir build-arch
+
+# build
+cd build-arch
+cmake -DKDE_INSTALL_USE_QT_SYS_PATHS=ON -DCMAKE_BUILD_TYPE=Optimization -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_FUTURE=ON -DBUILD_TESTING=ON ../sources
+make
+
+# tests
+xvfb-run make test