[keycloak-user] Minimal complete example

[Aidan Delaney]

Sebastien,

You're right.  It doesn't have to be an EAR.  What I'm looking to have
is the right demo workflow.

For example, if you 

$ cd keycloak-examples-2.4.0.Final/preconfigured-demo
$ mvn wildfly:run 

you get a 

```
org.jboss.msc.service.StartException in service
jboss.undertow.deployment.default-server.default-host./customer-
portal: 
java.lang.RuntimeException: java.lang.RuntimeException: UT010039:
Unknown authentication mechanism KEYCLOAK
```

which is because the wildfly keycloak adaptor isn't available

Adding 

```xml
<dependency>
  <groupId>org.keycloak</groupId>
  <artifactId>keycloak-wildfly-adapter</artifactId>
  <version>2.4.0.Final</version>
</dependency>
```
to the client-app `pom.xml` leads to a 

```
10:45:16,948 ERROR [org.jboss.msc.service.fail] (ServerService Thread
Pool -- 21) MSC000001: Failed to start service
jboss.undertow.deployment.default-server.default-host./customer-
portal: 
org.jboss.msc.service.StartException in service
jboss.undertow.deployment.default-server.default-host./customer-
portal: 
java.lang.NoClassDefFoundError:
org/keycloak/adapters/KeycloakDeploymentBuilder
        at
org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.r
un(UndertowDeploymentService.java:85)
        ...
```

which I can then get from somewhere else....I'll chase it eventually.

What I'm trying to do is have an example that pulls down all it's own
dependencies so that students don't have to get the keycloak-overlay or
 do anything other than have Maven available to them.

Again, I appreciate that this isn't how you'd normally go about running
Keycloak and I appreciate your help with this.

-- 
Dr Aidan Delaney
Principal Lecturer
Computing, Engineering & Maths
University of Brighton

@aidandelaney