diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..6595fa7d
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "external/dotnet-android-build-image"]
+	path = external/dotnet-android-build-image
+	url = git@forgejo.pschneider.fr:notazof/dotnet-android-build-image.git
diff --git a/external/dotnet-android-build-image b/external/dotnet-android-build-image
new file mode 160000
index 00000000..0695a6c1
--- /dev/null
+++ b/external/dotnet-android-build-image
@@ -0,0 +1 @@
+Subproject commit 0695a6c1fea6508f1a88f7ad0ad9cb93733aa52d