Rework docker-compose to avoid configuring with stale yaml files

Prior to this change, the first configuration will be run with the YAML files that were written when the image was built. Instead, we want the latest YAML files to be used.

docker-compose.yaml

@@ -1,9 +1,7 @@
 version: "3"
 services:
   keycloak:
-    build:
-      context: ./keycloak
-      dockerfile: Dockerfile
+    build: ./keycloak
     environment:
       KEYCLOAK_ADMIN: admin
       KEYCLOAK_ADMIN_PASSWORD: admin
@@ -19,6 +17,8 @@ services:
           path: ./keycloak
   keycloak-config-cli:
     build: ./config
+    volumes:
+      - ./config/src:/config
     depends_on:
       - keycloak
     environment: