[version_1.0]

Exercise 3: Launching Containers with Docker Compose

In this exercise, you launch the containers by using Docker Compose.

Task 1: Installing and building Docker Compose

In this task, you will install Docker Compose. You will then build with Docker Compose by using the docker-compose.yml file, which will launch four containers.

In the AWS Management Console, choose Services, and then search for and open Cloud9.
Open your AWS Cloud9 integrated development environment (IDE)instance.

To install Docker Compose, run the following command.

sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

Build by using the docker-compose.yml file.
```
cd ~/environment

docker-compose build
```

Task 2: Launching the containers for the frontend and services

In this task, you will launch the containers through Docker Compose.

Launch the containers.
```
docker-compose up -d
```
Check the status of your running containers.
```
docker-compose ps
```
You should see four containers:
- The directory service
- A local developer edition of Amazon DynamoDB
- A frontend Flask application
- An AWS Command Line Interface (AWS CLI) container (it will create the DynamoDB table and exit)

Exec into the directory-frontend container.

docker-compose exec directory-frontend bash

Inside the container, run the following commands.

ps -x

# you can access the "service" container from the front end to see the users data
curl directory-service/employee

exit

View the application frontend by choosing Preview, Preview Running Application.
Add some users to the corporate directory by choosing Add, filling out the form, and choosing Save.
View the logs from the directory-frontend container.
```
docker-compose logs directory-frontend
```
Stop and remove the Docker resources by running the docker-compose down command.
```
docker-compose down
```