This is a demo on the concept of microservices using docker. In this demo we make use of 3 docker containers. In these containers, only one is accessable by end user, while the rest of the containers will serve on a specific restAPI base path. The user will request for url http://localhost:8080/, and app0 container will serve the request. When the url changes to http://localhost:8080/s1/, app1 container will serve the request. Each container doing a specific service. In this case app-web mapping the url to the container services acting as web servers from user side, but is a nginx proxy service technically. Similarly, app0 and app1 being web services to user, but are web servers based on nodeJS running on different domains/servers technically.
- app0 -> this is a microservice that will run at GET /
- app1 -> this is a microservice that will run at GET /s1
- app-web -> this will run a linking microservice that runs at localhost:8080
docker build --target app0 -t app0 .docker run -d --name service0 app0
docker build --target app1 -t app1 .docker run -d --name service1 app1
docker build --target proxy -t app-web .docker run -d -p 8080:80 --link service0:service0 --link service1:service1 --name proxy app-web