diff --git a/singularity/Bleeding_edge_R.def b/singularity/Bleeding_edge_R.def
new file mode 100644
index 0000000..450e276
--- /dev/null
+++ b/singularity/Bleeding_edge_R.def
@@ -0,0 +1,14 @@
+BootStrap: XXX
+From: XXX
+
+%post
+  apt update
+  apt install -y locales gnupg-agent
+  sed -i '/^#.* en_.*.UTF-8 /s/^#//' /etc/locale.gen
+  sed -i '/^#.* fr_.*.UTF-8 /s/^#//' /etc/locale.gen
+  locale-gen
+
+  # Specific to R installation (https://cloud.r-project.org/bin/linux/ubuntu)
+  XXX
+  XXX
+  …