external-secrets/docs/guides-using-latest-image.md

You can test a feature that was not yet released using the following method, use it at your own discretion:

1. Create a values.yaml file with the following content:

replicaCount: 1

image:
  repository: ghcr.io/external-secrets/external-secrets
  pullPolicy: IfNotPresent
  # -- The image tag to use. The default is the chart appVersion.
  tag: "main"

# -- If set, install and upgrade CRDs through helm chart.
installCRDs: false

2. Install the crds

make crds.install

3. Install the external-secrets Helm chart indicating the values file created before:

helm install external-secrets external-secrets/external-secrets -f values.yaml