Resolve "Update documentation with missing dependencies steps for chart installation"

Closes #1079 (closed)

README.md

@@ -13,7 +13,7 @@ chart](https://github.com/helm/charts/tree/master/stable/collabora-code)
 ## Installation
 
 **NOTE:** The `onlyoffice.server_name` variable needs to be
-overwritten with an URL that points to your onlyoffice for this to work
+overwritten with a URL that points to your onlyoffice for this to work
 correctly. See `values-local.yaml.example` for an example of domain
 configurations you might want to do. These instructions assume you copy
 `values-local.yaml.example` to `values-local.yaml` and edit it.
@@ -28,6 +28,10 @@ secrets variables manually when you run helm install:
 - `onlyoffice.database.password`
 - `rabbitmq.rabbitmq.password`
 
+### Install from the remote repo
+
+This is the way to go if you want to use the packaged chart as is. If you'd like to make changes before installing, refer to the next section.
+
 Add our helm repository[^1]:
 
 ```console
@@ -50,6 +54,43 @@ hooks](https://helm.sh/docs/topics/charts_hooks/) work:
 The job in this chart needs the Nextcloud pod to be in a ready state before
 being executed.
 
+### Install from a local repo
+
+Start by cloning the nextcloud helm chart repo:
+
+```console
+git clone https://open.greenhost.net/stackspin/nextcloud.git
+cd nextcloud
+```
+
+Add the dependencies repositories:
+```console
+# nextcloud chart
+helm repo add nextcloud https://nextcloud.github.io/helm
+# rabbitmq chart
+helm repo add bitnami https://charts.bitnami.com/bitnami
+```
+
+Fetch the chart dependencies:
+```console
+helm dependency build
+```
+
+Then install the chart:
+```console
+helm install --wait -f values-local.yaml my-nextcloud .
+```
+
+**The `--wait` is important!** We need that because of how [helm chart
+hooks](https://helm.sh/docs/topics/charts_hooks/) work:
+
+> Note that if the --wait flag is set, the library will wait until all resources
+> are in a ready state and will not run the post-install hook until they are
+> ready.
+
+The job in this chart needs the Nextcloud pod to be in a ready state before
+being executed.
+
 ## Apps
 
 The Nextcloud app store allows admin users to install applications, many of