Deploying pattern extractor component

Save .env.example file as pattern.env and configure the variables appropriately
Build docker images
```
docker-compose build
```
Create docker containers
```
docker-compose up --no-start
```
Start Mongo DB
```
docker-compose start mongo
```
Login into mongo container and configure authentication (execute command from mongodb/scripts/mongo.js in the mongo shell)

docker exec -it pattern-mongo mongo

Start Pattern Extractor service
```
docker-compose start patternExtractor
```