Submodule initialization should be done manually

.drone.yml

@@ -13,6 +13,7 @@ steps:
     - name: archlinux_ccache
       path: /root/.ccache
     commands:
+    - git submodule update --init --recursive
     - pacman -S --noconfirm ccache openblas fftw pulseaudio pybind11
     - cmake .
     # More than two makes ascee2 irresponsive for now
@@ -44,4 +45,4 @@ steps:
     image: ubuntu
     pull: if-not-exists
     commands:
-    - echo "Hello world"
+    - git submodule update --init --recursive