book: document how to use Lima on macOS for development

docs/book/src/clusterctl/developers.md

@@ -215,10 +215,30 @@ To fix the kubeconfig run:
 sed -i -e "s/server:.*/server: https:\/\/$(docker port capi-quickstart-lb 6443/tcp | sed "s/0.0.0.0/127.0.0.1/")/g" ./capi-quickstart.kubeconfig
 ```
 
+### Using Lima on macOS
+
+To use [Lima] for developing Cluster API especially with CAPD the rootless template of lima does not work.
+
+The following command creates a working Lima machine for developing Cluster API with CAPD:
+
+```bash
+limactl start template://docker-rootful --name "docker" --tty=false \
+  --set '.provision += {"mode":"system","script":"#!/bin/bash\nset -eux -o pipefail\ncat << EOF > \"/etc/sysctl.d/99-capi.conf\"\nfs.inotify.max_user_watches = 1048576\nfs.inotify.max_user_instances = 8192\nEOF\nsysctl -p \"/etc/sysctl.d/99-capi.conf\""}' \
+  --memory 12 --cpus 10 --disk 64 \
+  --vm-type vz --rosetta=true
+```
+
+After creating the Lima machine we need to set `DOCKER_HOST` to the correct path:
+
+```bash
+export DOCKER_HOST=$(limactl list "docker" --format 'unix://{{.Dir}}/sock/docker.sock')
+```
+
 <!-- links -->
 [kind]: https://kind.sigs.k8s.io/
 [providers repositories]: configuration.md#provider-repositories
 [overrides layer]: configuration.md#overrides-layer
 [Install and/or configure a Kubernetes cluster]: ../user/quick-start.md#install-andor-configure-a-kubernetes-cluster
 [kind-docker-hub]: https://hub.docker.com/r/kindest/node/tags
 [issue 3795]: https://github.com/kubernetes-sigs/cluster-api/issues/3795
+[Lima]: https://github.com/lima-vm/lima