fix: security, keycloak SSOT, restart policy, arch-test reaktiviert

Co-authored-by: Junie <junie@jetbrains.com>

dc-backend.yaml

@@ -19,7 +19,7 @@ services:
     labels:
       - "org.opencontainers.image.created=${DOCKER_BUILD_DATE}"
     container_name: "${PROJECT_NAME:-meldestelle}-gateway"
-    restart: no
+    restart: unless-stopped
     ports:
       - "${GATEWAY_PORT:-8081:8081}"
       - "${GATEWAY_DEBUG_PORT:-5005:5005}"
@@ -94,7 +94,7 @@ services:
     labels:
       - "org.opencontainers.image.created=${DOCKER_BUILD_DATE}"
     container_name: "${PROJECT_NAME:-meldestelle}-ping-service"
-    restart: no
+    restart: unless-stopped
     ports:
       - "${PING_PORT:-8082:8082}"
       - "${PING_DEBUG_PORT:-5006:5006}"