update README

README.md

@@ -10,11 +10,27 @@ Official statistics on population in US (Census) and Europe (EUROSTAT).
 ---
 
 ## Use
-1. Pull the image:
-> docker pull registry.git.nilu.no/fact/data/fact_population:latest
-
-2. Run this data service:
->docker run -t -i --name fact_population -e MARIADB_DATABASE=FACT_population -e MYSQL_ROOT_PASSWORD=devops -p 3309:3306 -d registry.git.nilu.no/fact/data/fact_population:latest
+1. Through the command line:
+```bash
+docker pull registry.git.nilu.no/fact/data/fact_population:latest
+docker run -t -i --name fact_population -e MARIADB_DATABASE=FACT_population -e MYSQL_ROOT_PASSWORD=devops -p 3309:3306 -d registry.git.nilu.no/fact/data/fact_population:latest
+```
+2. Through a docker-compose file:
+```yaml
+version: '3.8'
+
+services:
+  fact_population:
+    image: registry.git.nilu.no/fact/data/fact_population:latest
+    container_name: fact_population
+    environment:
+      MARIADB_DATABASE: FACT_population
+      MYSQL_ROOT_PASSWORD: devops
+    ports:
+      - "3309:3306"
+    restart: unless-stopped
+```
+which could be executed with `docker-compose up fact_population -d`.
 
 The container makes available a MariaDB instance with the full database on population **FACT_population**. It is reachable on port 3309 of the localhost and the root password is 'devops'.