Add helm notes (Helper Message)

[jyje]

Opinion

To resolve #66, I made pilot helm NOTES.txt for open-webui chart (as Helper Message).

Example: open-webui notes with ingress+tls

This is an example command

helm upgrade --install --cleanup-on-fail \
    -n owui-ingress --create-namespace \
    --set ingress.enabled=true \
    --set ingress.class=nginx \
    --set ingress.host=owui.example.com \
    --set ingress.tls=true \
    --set ingress.existingSecret=owui-tls \
    owui-ingress .

And this is corresponding note (helper message)

🎉 Welcome to Open WebUI!!
  ___                    __        __   _     _   _ ___ 
 / _ \ _ __   ___ _ __  \ \      / /__| |__ | | | |_ _|
| | | | '_ \ / _ \ '_ \  \ \ /\ / / _ \ '_ \| | | || | 
| |_| | |_) |  __/ | | |  \ V  V /  __/ |_) | |_| || | 
 \___/| .__/ \___|_| |_|   \_/\_/ \___|_.__/ \___/|___|
      |_|                                               

v0.5.4 - building the best open-source AI user interface.
 - Chart Version: v5.2.0
 - Project URL 1: https://www.openwebui.com/
 - Project URL 2: https://github.com/open-webui/open-webui
 - Documentation: https://docs.openwebui.com/
 - Chart URL: https://github.com/open-webui/helm-charts

Open WebUI is a web-based user interface that works with Ollama, OpenAI, Claude 3, Gemini and more.
This interface allows you to easily interact with local AI models.

1. Deployment Information:
  - Chart Name: open-webui
  - Release Name: owui-ingress
  - Namespace: owui-ingress

2. Access the Application:
  Access via ClusterIP service:

    export LOCAL_PORT=8080
    export POD_NAME=$(kubectl get pods -n owui-ingress -l "app.kubernetes.io/component=open-webui" -o jsonpath="{.items[0].metadata.name}")
    export CONTAINER_PORT=$(kubectl get pod -n owui-ingress $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
    kubectl -n owui-ingress port-forward $POD_NAME $LOCAL_PORT:$CONTAINER_PORT
    echo "Visit http://127.0.0.1:$LOCAL_PORT to use your application"

  Then, access the application at: http://127.0.0.1:$LOCAL_PORT or http://localhost:8080

  Ingress is enabled. Access the application at: https://owui.example.com

3. Useful Commands:
  - Check deployment status:
      helm status owui-ingress -n owui-ingress
  
  - Get detailed information:
      helm get all owui-ingress -n owui-ingress

  - View logs:
      kubectl logs -f statefulset/open-webui -n owui-ingress

4. Cleanup:
  - Uninstall the deployment:
      helm uninstall owui-ingress -n owui-ingress

Demo: open-webui notes with various settings

I recorded for 4 scenarios with following codes:

git clone -b feat/owui-notes https://github.com/jyje/owui-helm-charts
cd owui-helm-charts/charts/open-webui

kind create cluster --name owui-notes
kubectl config use-context kind-owui-notes

# 1. Install the default chart
helm upgrade --install --cleanup-on-fail \
    -n owui-default --create-namespace \
    owui-default .

# 2. Install the deploy chart
helm upgrade --install --cleanup-on-fail \
    -n owui-deploy --create-namespace \
    --set persistence.enabled=false \
    owui-deploy .

# 3. Install the nodeport chart
helm upgrade --install --cleanup-on-fail \
    -n owui-nodeport --create-namespace \
    --set service.type=NodePort \
    owui-nodeport .

# 4. Install the loadbalancer chart
helm upgrade --install --cleanup-on-fail \
    -n owui-loadbalancer --create-namespace \
    --set service.type=LoadBalancer \
    owui-loadbalancer .

Please check Demo in asciicast:

If there are typo or good suggestion, please let me know.

---

Copilot Summary

This pull request includes updates to the Open WebUI Helm chart, specifically enhancing the user experience with the NOTES.txt file and updating the chart version.

Chart version update:

• charts/open-webui/Chart.yaml: Updated the chart version from 5.1.1 to 5.2.0.

Enhanced user experience:

• charts/open-webui/templates/NOTES.txt: Added a detailed welcome message and instructions for accessing and managing the Open WebUI application, including deployment information, access methods, useful commands, and cleanup instructions.