docker: depend on generate-secrets

config.yaml

@@ -63,3 +63,8 @@ systemd:
     - name: generate-secrets.service
       enabled: true
       contents_local: generate-secrets.service
+    # docker.service
+    - name: docker.service
+      dropins:
+        - name: docker.conf
+          contents_local: docker.conf

files/docker.conf

@@ -0,0 +1,3 @@
+[Unit]
+After=generate-secrets.service
+Requires=generate-secrets.service