feat: add 'latest' tag and docs

Signed-off-by: Douglas Gadêlha <dgadelha@live.com>

Author: dgadelha

.github/workflows/helm.yml

@@ -51,6 +51,14 @@ jobs:
           sed -i "s/0.0.0/$VERSION/g" helm/Chart.yaml
           npm run build:chart -- --image cubos/disk-resizer-controller:$VERSION
 
+          if [[ "${{ github.ref_type }}" == "tag" ]]; then
+            sed -i "s/$VERSION/latest/g" helm/Chart.yaml
+            npm run build:chart -- --image cubos/disk-resizer-controller:$VERSION
+          else
+            sed -i "s/$VERSION/edge/g" helm/Chart.yaml
+            npm run build:chart -- --image cubos/disk-resizer-controller:$VERSION
+          fi
+
       - name: Publish chart 🚀
         run: |
           helm push *.tgz oci://ghcr.io/cubos/charts

README.md

@@ -6,6 +6,17 @@ This is a Kubernetes controller that resizes disks of pods running, if usage is
 
 The controller runs a CronJob every 5 minutes that lists all PersistentVolumeClaims in the cluster. For each PVC, it checks if the PVC is bound to a Pod and if the Pod is running. If so, it checks the disk usage of the Pod. If the disk usage is above 85%, it resizes the PVC to a bigger size (110%).
 
+## Installing on your cluster
+
+[Helm](https://helm.sh) is the recommended way to install the controller on your cluster.
+
+```bash
+helm install disk-resizer-controller oci://ghcr.io/cubos/charts/disk-resizer-controller \
+  --namespace kube-system \
+  --set secrets.env.CLUSTER_NAME=your-cluster-name \
+  --set secrets.env.SLACK_WEBHOOK_URL="https://hooks.slack.com/services/your/slack/webhook/url"
+```
+
 ## Environment variables
 
 | Name                | Description                                  | Required |