Table of Contents

1. Challenge

   Create a Docker Compose file.

   The containers of your docker-compose.yml should look like the following:

   version: '3.2'
   services:
     weather-app1:
         build: ./weather-app
         tty: true
         networks:
          - frontend
     weather-app2:
         build: ./weather-app
         tty: true
         networks:
          - frontend
     weather-app3:
         build: ./weather-app
         tty: true
         networks:
          - frontend
   
     loadbalancer:
         build: ./load-balancer
         image: nginx
         tty: true
         ports:
          - '80:80'
         networks:
          - frontend
   
   networks:
     frontend:
   

2. Challenge

   Update `nginx.conf`.

   The contents of your nginx.conf file should look like the following:

   events { worker_connections 1024; }
   
   http {
     upstream localhost {
       server weather-app1:3000;
       server weather-app2:3000;
       server weather-app3:3000;
     }
     server {
       listen 80;
       server_name localhost;
       location / {
         proxy_pass http://localhost;
         proxy_set_header Host $host;
       }
     }
   }
   

3. Challenge

   Execute `docker-compose up`.

   Execute a docker-compose up:

   /usr/local/bin/docker-compose up --build -d
   

4. Challenge

   Create a Docker service using Docker Swarm.

   Create a Docker service by executing the following command:

   docker service create --name nginx-app --publish published=8080,target=80 --replicas=2 nginx