docker-compose.yml

version: '3.7'

services:
  db:
    image: postgres
    restart: unless-stopped
  server:
    build:
      context: .
      dockerfile: Dockerfile-multiple-images
      target: adoption-service
    environment:
      DB_URL: jdbc:postgresql://db:5432/?user=postgres
      EUREKA_URI: http://eureka:8761/eureka
    ports:
      - "8080:8080"
  alexa-service:
    build:
      context: .
      dockerfile: Dockerfile-multiple-images
      target: alexa-service
    environment:
      EUREKA_URI: http://eureka:8761/eureka
    ports:
      - "8082:8082"
  eureka:
    build:
      context: .
      dockerfile: Dockerfile-multiple-images
      target: eureka
    ports:
      - "8761:8761"

Dockerfile

FROM maven:3-jdk-12 as build
WORKDIR /build
COPY . .
RUN mvn clean install

FROM openjdk:12 as eureka
WORKDIR /app
COPY --from=build /build/eureka/target/eureka.jar eureka.jar
EXPOSE 8761
ENTRYPOINT ["java", "-Djava.security.egd=file:/dev/./urandom", "-jar", "eureka.jar"]

FROM openjdk:12 as alexa-service
WORKDIR /app
COPY --from=build /build/alexa-service/target/alexa-service.jar alexa-service.jar
EXPOSE 8082
ENTRYPOINT ["java", "-Djava.security.egd=file:/dev/./urandom", "-jar", "alexa-service.jar"]

FROM openjdk:12 as adoption-service
WORKDIR /app
COPY --from=build /build/adoption-service/target/adoption-service.jar adoption-service.jar
EXPOSE 8081
ENTRYPOINT ["java", "-Djava.security.egd=file:/dev/./urandom", "-jar", "adoption-service.jar"]