Integration Test on DB-Related Code with Docker Compose

Download the executable from the official site and place it in the /usr/local/bin/.

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

Grant the execution permission.

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

Prepare dockerfile for test. e.g. pytest.Dockerfile
- Add wait-for-it.sh if the service is not ready immediately.
- Reference: Control startup and shutdown order in Compose
Example docker compose config yaml (TODO)
Build the related image first.
```
docker-compose build
```
Run the testing service.
```
docker-compose run
```
Remember to shut down all the services once finished.
```
docker-compose down
```
To check if there is any service from docker compose
```
docker-compose ps
```