build(sovity-daps): use Keycloak dev in Compose

Without start-dev, Keycloak tries to require HTTPS even in local setups,
even with KC_HTTP_ENABLED=true.

README.md

@@ -49,6 +49,8 @@ the following environment variable adjustments are needed:
 - `KC_PROXY=edge`
 - `KC_HOSTNAME=keycloak.example.com`
 
+Additionally, the `start-dev` command should be removed from the `docker-compose.yml`.
+
 Further configuration options can be found in the official [Keycloak documentation](https://www.keycloak.org/server/all-config).
 
 ## Realm Configuration

docker-compose.yml

@@ -1,6 +1,7 @@
 services:
   keycloak:
     build: .
+    command: [start-dev]
     restart: always
     environment:
       KC_DB: postgres