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Luke
Luke

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Deploy microservice with Docker from scratch - P1

#docker #microservices

In this series, I will build and deploy a simple microservice app with docker. Everything begin from scratch 😎

Prerequisite

  • Installed Docker (If you don't have it, follow the instructions for Windows or Linux)

Tech stack

Right here, I will use:

  • FE: Angular
  • BE: Java
  • DB: MySQL

P/s: You can use your preferred stack, but scripting a docker-image build may differ slightly.

Architecture

Architecture

Architecture

The system will have 6 components:
1) Client app: Interact BE via API
2) Nginx (gateway): Reverse proxy and load balancer
3) Project Service: Handle request relate to project
4) Task Service: Handle request relate to task
5) User Service: Handle request relate to user
6) Database Layer (MySQL): Data persistence

Project Structure 

/
├── client-app/ 
│   ├── src/
│   └── Dockerfile 
├── project-service/
│   ├── src/ 
│   └── Dockerfile 
├── task-service/ 
│   ├── src/
│   └── Dockerfile
├── user-service/ 
│   ├── src/
│   └── Dockerfile
├── docker-compose
└── nginx.conf
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❗Important thing: Did you notice every service have each own Dockerfile 🤔

Docker file

  • FE (AngularJS) 
FROM node:20-alpine AS builder
WORKDIR /app
COPY package*.json ./
COPY angular*.json ./
COPY tsconfig*.json ./
RUN npm install --legacy-peer-deps
COPY . .
RUN npm run build -- --configuration production

FROM nginx:alpine AS production
COPY --from=builder /app/dist/client-app/browser/ /usr/share/nginx/html

EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]
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  • BE (Java) 
FROM maven:latest AS build
WORKDIR /projectservice
COPY . .
RUN mvn clean package -DskipTests

FROM eclipse-temurin:21-jdk-alpine
WORKDIR /projectservice
COPY --from=build /projectservice/target/*.jar app.jar
EXPOSE 8081
ENTRYPOINT ["java", "-jar", "/projectservice/app.jar"]
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As mentioned above, each service will have its own Dockerfile so remember clone and update it for each service.

Conclusion

Okay, I have an overview of the project and its functionality. In the next post, I'll delve into implementation details.

Happy Coding!!!

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