added mit license, updated nginx Dockerfiles

compose-sample-2/docker-compose.yml

@@ -2,7 +2,7 @@ version: '3'
 
 services:
   proxy:
-    image: nginx:1.11 # this will use the latest version of 1.11.x
+    image: nginx:1.13 # this will use the latest version of 1.11.x
     ports:
       - '80:80' # expose 80 on host and sent to 80 in container
     volumes:

compose-sample-3/nginx.Dockerfile

@@ -1,3 +1,3 @@
-FROM nginx:1.11
+FROM nginx:1.13
 
-COPY nginx.conf /etc/nginx/conf.d/default.conf
+COPY nginx.conf /etc/nginx/conf.d/default.conf