Deploying with Docker

Docker makes it easy to containerize and deploy microservices. In this tutorial, we'll look at how to create Docker images and orchestrate the deployment of our services.

1. Basic Configuration

1.1 Dockerfile

# Build stage
FROM eclipse-temurin:17-jdk-alpine AS build
WORKDIR /workspace/app
COPY mvnw .
COPY .mvn .mvn
COPY pom.xml .
COPY src src
RUN ./mvnw install -DskipTests
RUN mkdir -p target/dependency && (cd target/dependency; jar -xf ../*.jar)

# Runtime stage
FROM eclipse-temurin:17-jre-alpine
VOLUME /tmp
ARG DEPENDENCY=/workspace/app/target/dependency
COPY --from=build ${DEPENDENCY}/BOOT-INF/lib /app/lib
COPY --from=build ${DEPENDENCY}/META-INF /app/META-INF
COPY --from=build ${DEPENDENCY}/BOOT-INF/classes /app
ENTRYPOINT ["java","-cp","app:app/lib/*","com.example.product.ProductServiceApplication"]

1.2 Docker Compose Configuration

# docker-compose.yml
version: '3.8'

services:
  eureka-server:
    build: ./eureka-server
    ports:
      - "8761:8761"
    environment:
      - SPRING_PROFILES_ACTIVE=prod
    networks:
      - microservices-network

  config-server:
    build: ./config-server
    ports:
      - "8888:8888"
    environment:
      - SPRING_PROFILES_ACTIVE=prod
      - EUREKA_CLIENT_SERVICEURL_DEFAULTZONE=http://eureka-server:8761/eureka/
    depends_on:
      - eureka-server
    networks:
      - microservices-network

  api-gateway:
    build: ./api-gateway
    ports:
      - "8080:8080"
    environment:
      - SPRING_PROFILES_ACTIVE=prod
      - EUREKA_CLIENT_SERVICEURL_DEFAULTZONE=http://eureka-server:8761/eureka/
      - SPRING_CLOUD_CONFIG_URI=http://config-server:8888
    depends_on:
      - eureka-server
      - config-server
    networks:
      - microservices-network

  product-service:
    build: ./product-service
    ports:
      - "8081:8081"
    environment:
      - SPRING_PROFILES_ACTIVE=prod
      - EUREKA_CLIENT_SERVICEURL_DEFAULTZONE=http://eureka-server:8761/eureka/
      - SPRING_CLOUD_CONFIG_URI=http://config-server:8888
    depends_on:
      - eureka-server
      - config-server
    networks:
      - microservices-network

  order-service:
    build: ./order-service
    ports:
      - "8082:8082"
    environment:
      - SPRING_PROFILES_ACTIVE=prod
      - EUREKA_CLIENT_SERVICEURL_DEFAULTZONE=http://eureka-server:8761/eureka/
      - SPRING_CLOUD_CONFIG_URI=http://config-server:8888
    depends_on:
      - eureka-server
      - config-server
    networks:
      - microservices-network

  zipkin:
    image: openzipkin/zipkin
    ports:
      - "9411:9411"
    networks:
      - microservices-network

networks:
  microservices-network:
    driver: bridge