Fix: Revise custom-user-federation configuration

Fixes keycloak#424

custom-user-federation-example/src/main/resources/META-INF/jboss-deployment-structure.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<jboss-deployment-structure>
+    <deployment>
+        <dependencies>
+            <module name="org.keycloak.keycloak-core" export="true" />
+            <module name="org.keycloak.keycloak-server-spi" export="true" />
+            <module name="org.keycloak.keycloak-server-spi-private" export="true" />
+            <module name="org.keycloak.keycloak-services" export="true" />
+            <module name="org.bouncycastle" export="true" />
+            <module name="com.google.guava" export="true" />
+            <module name="org.jboss.logging" export="true" />
+            <module name="org.apache.commons.io" export="true" />
+        </dependencies>
+    </deployment>
+</jboss-deployment-structure>

docker-compose.yml

@@ -32,8 +32,13 @@ services:
     - DB_USER=keycloak
     - DB_DATABASE=keycloak
     - DB_PASSWORD=password
+# Enable for remote java debugging
+#    - PREPEND_JAVA_OPTS=-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:8787
     ports:
     - 8080:8080
+# Enable for remote java debugging
+#    - 8787:8787
     volumes:
-    - ./custom-user-federation-example/build/libs:/opt/jboss/keycloak/providers/
+# Make the custom-user-federation-example extension available to Keycloak. The :z option is required and tells Docker that the volume content will be shared between containers.
+    - ./custom-user-federation-example/build/libs/custom-user-federation-example.jar:/opt/jboss/keycloak/standalone/deployments/custom-user-federation-example.jar:z