fix for molecule>4.0.1 schema-validation

molecule/default/molecule.yml

@@ -1,19 +1,5 @@
 ---
 
-_references:
-  docker:
-    all: &docker_all
-      docker_host: 'tcp://molecule-docker.local:2375'
-      # docker_host: 'unix://var/run/docker.sock'  # localhost
-      purge_networks: true
-      image: 'debian:11-slim'
-      # for docker systemd config see: https://serverfault.com/questions/1053187/systemd-fails-to-run-in-a-docker-container-when-using-cgroupv2-cgroupns-priva
-      dockerfile: 'Dockerfile_debian11_systemd.j2'
-      build_image: yes
-      tmpfs: ['/tmp', '/run', '/run/lock']
-      privileged: true
-      command: '/sbin/init'
-
 dependency:
   name: galaxy
 driver:
@@ -29,14 +15,32 @@ platforms:
       - name: 'test-ag-certs'
         ipv4_address: '192.168.6.1'
     groups: [grp_targets]
-    <<: *docker_all
+
+    # docker config
+    docker_host: 'tcp://molecule-docker.local:2375'
+    purge_networks: true
+    image: 'debian:11-slim'
+    dockerfile: 'Dockerfile_debian11_systemd.j2'
+    build_image: yes
+    tmpfs: ['/tmp', '/run', '/run/lock']
+    privileged: true
+    command: '/sbin/init'
 
   - name: test-ag-certs-letsencrypt
     networks:
       - name: 'test-ag-certs'
         ipv4_address: '192.168.6.2'
     groups: [grp_targets]
-    <<: *docker_all
+
+    # docker config
+    docker_host: 'tcp://molecule-docker.local:2375'
+    purge_networks: true
+    image: 'debian:11-slim'
+    dockerfile: 'Dockerfile_debian11_systemd.j2'
+    build_image: yes
+    tmpfs: ['/tmp', '/run', '/run/lock']
+    privileged: true
+    command: '/sbin/init'
     exposed_ports:
       - '80/tcp'
     published_ports:  # proxied for LetsEncrypt tests