Spring Boot Service with dynamic port number cannot be accessible though Eureka Service Discovery is detecting it

Scenario:

1. I have a very simple spring boot micro service i.e. video-service with port number defined as 0 (to try the dynamic port assignment by service discovery) and it has a very simple GET /ping method.
2. There is another service eureka service discovery that is running and detecting the video-service (also showing in eureka dashboard.
3. Both the services are dockerized, running via docker compose and I did not mention any port number for video-service in Docker-compose.yaml as it does not allow/or showing error when mentioning "0" or "0:0" in compose YAML. I would like to try the option of dynamic port number assignment that is provided by eureka service discovery.
4. When I mention the static port number in application YAML and compose YAML, video-service /ping REST endpoint is accessible.

Problem

When I try the dynamic port assignment for video-service,/ping REST endpoint is not accessible but it is detected by eureka discovery. Kindly help/suggest me on how to make video-service /ping REST endpoint is accessible with dynamic port assigned by eureka discovery when both the services are containerized/dockerized.

Note:

Mentioning the trimmed version of my code in the below to understand the problem easily.

application.yaml (video-service)

spring:
  application:
    name: "${SPRING_APP_NAME:video-service}"
server:
  port: 0 #9141
eureka:
  client:
    serviceUrl:
      defaultZone: http://eureka-discovery-service:9111/eureka

Compose YAML (Docker compose)

  eureka-discovery-service:
    build:
      context: ./eureka-discovery
    container_name: eureka-discovery-service
    ports:
      - "9111:9111"
    environment:
      - EUREKA_INSTANCE_HOSTNAME=eureka-discovery-service
      - EUREKA_CLIENT_REGISTER-WITH-EUREKA=false
      - EUREKA_INSTANCE_PREFER_IPADDRESS=true

  video-service:
    build:
      context: ./video-service
    container_name: video-service
    depends_on:
      - eureka-discovery-service
#    ports:
#      - "0"
#      - "0:0"
#      - "9141:9141"
    environment:
      - EUREKA_CLIENT_SERVICEURL_DEFAULTZONE=http://eureka-discovery-service:9111/eureka

Eureka Discovery Service Dashboard

Kindly help/guide me on this as I am new to Spring Cloud.

Thank you in advance.