examples improvement - hardened, joomla, kubernetes, load-balancer and moodle

examples/load-balancer/README.md

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+# Load balancer
+
+Simple example on how to load balance requests to multiple backends.
+
+## Architecture
+
+<img src="https://github.com/bunkerity/bunkerized-nginx/blob/dev/examples/load-balancer/architecture.png?raw=true" />
+
+## Configuration
+
+Edit the custom `upstream` directive in the **http-confs/upstream.conf** file according to your use case.
+
+## Docker
+
+See [docker-compose.yml](https://github.com/bunkerity/bunkerized-nginx/blob/master/examples/load-balancer/docker-compose.yml).