Get service IP:PORT as environment variable in pod - kubernetes

Question

I have a service running and attached to a pod. In the pod, I need to define env variable which has to point to itself. If I run locally, I would set path to localhost:8080 and it works. How can I set env variable to point to the service itself?
user#user % kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
my-service LoadBalancer 10.96.116.26 129.153.28.245 8080:31495/TCP 21h
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP,12250/TCP 5d18h
If the configuration is:
spec:
containers:
- name: myapp
image: path/to/imageregistry/image:v1.0.0-amd64
env:
- name: BASE_PATH
value: "129.153.28.245:8080"
App is working, in a sense that If I open in browser 129.153.28.245:8080/app/pages it will open the website. If I replace <EXTERTNAL-IP> with <CLUSTER-IP> it's not loading.
How to retrieve <EXTERTNAL-IP> from the service and put into env variable, something like:
env:
- name: BASE_PATH
value: "<EXTERNAL-IP-FROM-SERVICE-NAME>:8080"
or is there another and better approach to do that?
Here's the full Deployment and Service yaml:
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-deployment
spec:
selector:
matchLabels:
app: myapp
replicas: 1
template:
metadata:
labels:
app: myapp
spec:
containers:
- name: myapp
image: xxx.ocir.io/xxxxxx/myrepo/myimage:v1.0.0-amd64
env:
- name: BASE_PATH
value: "129.153.28.245:8080"
ports:
- containerPort: 80
imagePullSecrets:
- name: ocirsecret
---
apiVersion: v1
kind: Service
metadata:
name: my-service
spec:
type: LoadBalancer
ports:
- port: 8080
protocol: TCP
targetPort: 8080
selector:
app: myapp

Answer 1

Exposing Pod and Cluster Vars to Containers
Let's say you need some data about the Pod or K8s environment in your application to add Pod information as metadata to logs. such as e.g.
Pod IP
Pod Namespace
Service Account of Pod
But how to access this information?
All Pod information can be made available in the config file
There are 2 ways to expose Pod fileds to a running Container:
Environment Variables
Volume Files
Environment Variable
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment-env
labels:
app: nginx
spec:
replicas: 3
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx
ports:
- containerPort: 80
- name: log-sider
image: busybox
command: [ 'sh', '-c' ]
args:
- while true; do
echo sync app logs;
printenv POD_NAME POD_IP POD_SERVICE_ASCCOUNT;
sleep 20;
done;
env:
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_IP
valueFrom:
fieldRef:
fieldPath: status.podIP
- name: POD_SERVICE_ASCCOUNT
valueFrom:
fieldRef:
fieldPath: spec.serviceAccountName
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