Add week 8 materials

materials/08-scaling/seminar/nginx-balancing/docker-compose.yml

@@ -0,0 +1,23 @@
+services:
+    nginx:
+        image: nginx
+        volumes:
+        - ./nginx.conf:/etc/nginx/conf.d/default.conf
+        ports:
+        - 8000:8000
+
+    server1:
+        image: hello
+        build:
+            context: hello-world
+        command: 8000 "Alice"
+        ports:
+        - 8001:8000
+
+    server2:
+        image: hello
+        build:
+            context: hello-world
+        command: 8000 "Bob"
+        ports:
+        - 8002:8000