How can one use Spring Boot to run both Eureka Server and Eureka Client in Docker?

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To run both Eureka Server and Eureka Client in Docker using Spring Boot, follow these steps:

1. First, create a Spring Boot project with the required dependencies for Eureka Server and Eureka Client.

2. In the application.properties file of the Eureka Server, add the following code:

server.port=8761
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
eureka.server.enable-self-preservation=false
eureka.server.eviction-interval-timer-in-ms=5000
eureka.client.service-url.default-zone=http://localhost:8761/eureka/

1. In the application.properties file of the Eureka Client, add the following code:

server.port=8080
spring.application.name=eureka-client
eureka.client.service-url.default-zone=http://localhost:8761/eureka/

1. Create a Dockerfile for both Eureka Server and Eureka Client, as shown below:

Eureka Server Dockerfile:

FROM openjdk:8
EXPOSE 8761
ADD target/my-eureka-server.jar my-eureka-server.jar
ENTRYPOINT ["java", "-jar", "my-eureka-server.jar"]

Eureka Client Dockerfile:

FROM openjdk:8
EXPOSE 8080
ADD target/my-eureka-client.jar my-eureka-client.jar
ENTRYPOINT ["java", "-jar", "my-eureka-client.jar"]

1. Build Docker images for both Eureka Server and Eureka Client using the following commands:

docker build -t my-eureka-server .
docker build -t my-eureka-client .

1. Finally, run both Eureka Server and Eureka Client in Docker containers using the following commands:

docker run -p 8761:8761 my-eureka-server
docker run -p 8080:8080 --network=host my-eureka-client

Note: The "--network=host" flag is required to ensure that the Eureka Client can communicate with the Eureka Server running on the host machine.