Try docker-in-docker

.drone.yml

@@ -6,8 +6,23 @@ name: default
 steps:
   - name: test
     image: debian:11
-    privileged: true
+    volumes:
+      - name: dockersock
+        path: /var/run
     commands:
+      - sleep 5 # To ensure docker started.
       - apt update && apt install -y ansible docker.io python3-pip
       - python3 -m pip install "molecule[lint,docker]"
       - molecule test
+
+services:
+- name: docker
+  image: docker:dind
+  privileged: true
+  volumes:
+  - name: dockersock
+    path: /var/run
+
+volumes:
+- name: dockersock
+  temp: {}