Make hawkular running also on non-8080 ports

The current hawkular getting started description suggests one should run

docker run -d -p 8081:8080 hawkular/hawkular

and then the hawkular should be available on http://localhost:8081

The UI is ok, but after user registration there is an error in the JS console (and in the server.log) and the spinner is spinning forever.

JS console:
GET http://localhost:8081/hawkular-accounts/personas/current 500 (Internal Server Error)
..
Failed in retrieving the current persona
..
TypeError: Cannot read property 'id' of undefined

server.log:
2015-08-05 11:36:04,166 ERROR [io.undertow.request] (default task-7) UT005023: Exception handling request to /hawkular-accounts/personas/current: java.lang.RuntimeException
: Unable to resolve realm public key remotely
at org.keycloak.adapters.AdapterDeploymentContext.resolveRealmKey(AdapterDeploymentContext.java:134)
at org.keycloak.adapters.AdapterDeploymentContext.resolveDeployment(AdapterDeploymentContext.java:83)
at org.keycloak.adapters.PreAuthActionsHandler.preflightCors(PreAuthActionsHandler.java:71)
at org.keycloak.adapters.PreAuthActionsHandler.handleRequest(PreAuthActionsHandler.java:47)
at org.keycloak.adapters.undertow.ServletPreAuthActionsHandler.handleRequest(ServletPreAuthActionsHandler.java:68)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.server.handlers.MetricsHandler.handleRequest(MetricsHandler.java:62)
at io.undertow.servlet.core.MetricsChainHandler.handleRequest(MetricsChainHandler.java:59)
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:282)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:261)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:80)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:172)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:199)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:774)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:117)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:177)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:131)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:611)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:446)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
at org.keycloak.adapters.AdapterDeploymentContext.resolveRealmKey(AdapterDeploymentContext.java:105)