added example compose file

docker-compose.yml

@@ -0,0 +1,16 @@
+version: "3"
+
+networks:
+  newsbot:
+
+services:
+  portal:
+    image: newsbot.portal:latest
+    environment:
+      Logging__LogLevel__Default: "Information"
+      Logging__LogLevel__Microsoft.AspNetCore: "Warning"
+      DefaultInstanceUri: "http://192.168.1.225:5001"
+    ports:
+      - "5002:80"
+    networks:
+      - newsbot