port 8080 is actually port 80 (#123)

Signed-off-by: Kenny Tordeurs <ktordeur@redhat.com>

Co-authored-by: Kenny Tordeurs <ktordeur@redhat.com>

nginx-flask-mysql/README.md

@@ -28,7 +28,7 @@ services:
     ...
 ```
 The compose file defines an application with three services `proxy`, `backend` and `db`.
-When deploying the application, docker-compose maps port 80 of the proxy service container to port 8080 of the host as specified in the file.
+When deploying the application, docker-compose maps port 80 of the proxy service container to port 80 of the host as specified in the file.
 Make sure port 80 on the host is not already being in use.
 
 ## Deploy with docker-compose
@@ -52,7 +52,7 @@ Listing containers must show three containers running and the port mapping as be
 ```
 $ docker ps
 CONTAINER ID        IMAGE                       COMMAND                  CREATED             STATUS              PORTS                    NAMES
-c2c703b66b19        nginx-flask-mysql_proxy     "nginx -g 'daemon of…"   39 seconds ago      Up 38 seconds       0.0.0.0:8080->80/tcp     nginx-flask-mysql_proxy_1
+c2c703b66b19        nginx-flask-mysql_proxy     "nginx -g 'daemon of…"   39 seconds ago      Up 38 seconds       0.0.0.0:80->80/tcp     nginx-flask-mysql_proxy_1
 2b8a21508c3c        nginx-flask-mysql_backend   "/bin/sh -c 'flask r…"   9 minutes ago       Up 38 seconds       0.0.0.0:5000->5000/tcp   nginx-flask-mysql_backend_1
 0e6a96ea2028        mysql:8.0.19                "docker-entrypoint.s…"   9 minutes ago       Up 38 seconds       3306/tcp, 33060/tcp      nginx-flask-mysql_db_1
 
@@ -61,7 +61,7 @@ c2c703b66b19        nginx-flask-mysql_proxy     "nginx -g 'daemon of…"   39 se
 
 After the application starts, navigate to `http://localhost:80` in your web browser or run:
 ```
-$ curl localhost:8080
+$ curl localhost:80
 <div>Blog post #1</div><div>Blog post #2</div><div>Blog post #3</div><div>Blog post #4</div>
 ```