renovate/docker: Add

dargmuesli · web-flow · commit d5efce91dde2 · 2019-11-09T19:38:29.000+01:00
diff --git a/renovate.json b/renovate.json
@@ -1,6 +1,12 @@
 {
   "automerge": true,
   "automergeType": "branch",
+  "docker": {
+    "major": {
+      "enabled": true
+    },
+    "pinDigests": true
+  },
   "extends": [
     "config:base"
   ],
