How to access containers via container name and exposed port(internal port without mapping to external) , running in single pod(multi-container)

[neetra]

Problem:
I have two applications say applicationA, applicationB.

Using Docker compose.yml:
version: ‘3.4’

services:
applicationa:
environment:
- ASPNETCORE_ENVIRONMENT=Development

ports:
  - "7001:80"  

applicationb:
environment:
- ASPNETCORE_ENVIRONMENT=Development
In dockerfile of applicationa (Exposed port 80), applicationb(exposed port 5000)
Exposed port of applicationB is not mapped to external port thus it is not accessible directly
ApplicationA access applicationB via http://containername:containerexposedport i.e http://applicationb:5000

Using Minikube:
Deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: appaappb-deployment
labels:
app: appaappb
spec:
replicas: 1
selector:
matchLabels:
app: appaappb
template:
metadata:
labels:
app: appaappb
spec:
containers:

• name: appa
  image: appa:latest
  env:
• name: ASPNETCORE_ENVIRONMENT
  value: “Development”
  ports:
• containerPort: 80
  imagePullPolicy: Never
  containers:
• name: appb
  image: appb:latest
  env:
• name: ASPNETCORE_ENVIRONMENT
  value: “Development”
  ports:
• containerPort: 5000
  imagePullPolicy: Never

Service (Map external port)
kubectl expose pod appaappb-deployment-8656cfcdff-wd4hv --name=appaappbservice --type=“NodePort” --target-port 80 --port 80

Now as appA and appB are not in same docker network appA cannot access appB via container name and container internal port

So how to access appB in appA ?

information:
Minikube version:v1.9.2
Docker version: 19.0.3