diff --git a/Makefile b/Makefile
index cdc2eb21..1a933703 100644
--- a/Makefile
+++ b/Makefile
@@ -17,3 +17,7 @@ infra:
 .PHONY: apps
 apps:
 	make -C apps
+
+.PHONY: docs
+docs:
+	make -C docs
diff --git a/docs/Makefile b/docs/Makefile
new file mode 100644
index 00000000..512d3092
--- /dev/null
+++ b/docs/Makefile
@@ -0,0 +1,5 @@
+.POSIX:
+
+todo:
+	printf "# TODO\n\n" > TODO.md
+	git grep -h TODO .. | sed 's/.* TODO /- /g' >> TODO.md
diff --git a/docs/TODO.md b/docs/TODO.md
new file mode 100644
index 00000000..a9e07124
--- /dev/null
+++ b/docs/TODO.md
@@ -0,0 +1,10 @@
+# TODO
+
+- check if this is a bug
+- use Ansible wait_for /var/run/docker.sock
+- remote backend (etcd or minio)
+- convert to YAML for Terraform yamldecode
+- Optimize SELinux
+- Optimize firewall
+- change to /var/lib/lxd/server.crt after https://wiki.debian.org/LXD
+- use btrfs in k8s 1.19.8 https://github.com/kubernetes/kubernetes/issues/94335