Added examples.

examples/example-docker-compose.yml

@@ -0,0 +1,17 @@
+services:
+  messengerapi:
+    image: gitea.masita.net/mc/messengerapi:latest
+    container_name: messengerapi
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "10m"
+        max-file: "3"
+    ports:
+      - 8080:8080
+    restart: always
+    volumes:
+      - /mnt/config/users.conf:/app/users.conf:ro
+    environment:
+      - SQL_CONNECTIONSTRING
+      - CORS_ORIGINS