diff --git a/lib/manager/circleci/extract.js b/lib/manager/circleci/extract.js
index 8e71e6b7cc86876eed3cdb2f3550a54dfead5435..9eef2a7613a6857d4c922774e88366f5253e471f 100644
--- a/lib/manager/circleci/extract.js
+++ b/lib/manager/circleci/extract.js
@@ -24,7 +24,7 @@ function extractDependencies(content) {
         { dockerRegistry, depName, currentTag, currentDigest },
         'CircleCI docker image'
       );
-      deps.push({
+      const dep = {
         lineNumber,
         currentFrom,
         fromVersion: currentFrom,
@@ -35,7 +35,11 @@ function extractDependencies(content) {
         depName,
         currentTag,
         versionScheme: 'semver',
-      });
+      };
+      if (depName === 'node' || depName.endsWith('/node')) {
+        dep.commitMessageTopic = 'Node.js';
+      }
+      deps.push(dep);
     }
     lineNumber += 1;
   }
diff --git a/lib/manager/docker-compose/extract.js b/lib/manager/docker-compose/extract.js
index 9775cecb025180ba4c70ba65b7d6d9a0531b670f..f892923f2f586966a0a0424f277036c1760a94bd 100644
--- a/lib/manager/docker-compose/extract.js
+++ b/lib/manager/docker-compose/extract.js
@@ -24,7 +24,7 @@ function extractDependencies(content) {
         { dockerRegistry, depName, currentTag, currentDigest },
         'Docker Compose image'
       );
-      deps.push({
+      const dep = {
         lineNumber,
         currentFrom,
         currentDepTagDigest,
@@ -34,7 +34,11 @@ function extractDependencies(content) {
         depName,
         currentTag,
         versionScheme: 'semver',
-      });
+      };
+      if (depName === 'node' || depName.endsWith('/node')) {
+        dep.commitMessageTopic = 'Node.js';
+      }
+      deps.push(dep);
     }
     lineNumber += 1;
   }
diff --git a/lib/manager/docker/extract.js b/lib/manager/docker/extract.js
index 1e83a560f227ddf78d052dc05b5e01931cdb5f2d..d15e1e720e674a707359156e56dc6f2e7d857b7e 100644
--- a/lib/manager/docker/extract.js
+++ b/lib/manager/docker/extract.js
@@ -70,7 +70,8 @@ function extractDependencies(content) {
     } else if (stageNames.includes(currentFrom)) {
       logger.debug({ currentFrom }, 'Skipping alias FROM');
     } else {
-      deps.push({
+      const dep = {
+        language: 'docker',
         fromLine,
         fromPrefix,
         currentFrom,
@@ -82,7 +83,11 @@ function extractDependencies(content) {
         depName,
         currentTag,
         versionScheme: 'semver',
-      });
+      };
+      if (depName === 'node' || depName.endsWith('/node')) {
+        dep.commitMessageTopic = 'Node.js';
+      }
+      deps.push(dep);
     }
   });
   if (!deps.length) {
diff --git a/lib/workers/repository/updates/flatten.js b/lib/workers/repository/updates/flatten.js
index 24afb540992f5bafb2fc152da6767b668e6f330f..24c6ef928ab11b78865c02eff30e8f9ca17238e5 100644
--- a/lib/workers/repository/updates/flatten.js
+++ b/lib/workers/repository/updates/flatten.js
@@ -38,7 +38,13 @@ function flattenUpdates(config, packageFiles) {
                   .replace(/\s+/g, '-')
                   .toLowerCase()
               : undefined;
-            update.versionScheme = update.versionScheme || 'semver';
+            if (
+              updateConfig.language === 'docker' &&
+              updateConfig.depName.match(/(^|\/)node$/)
+            ) {
+              updateConfig.managerBranchPrefix = '';
+              updateConfig.depNameSanitized = 'node';
+            }
             delete updateConfig.repoIsOnboarded;
             delete updateConfig.renovateJsonPresent;
             updates.push(updateConfig);
diff --git a/test/_fixtures/docker-compose/docker-compose.1.yml b/test/_fixtures/docker-compose/docker-compose.1.yml
index f8d68c862ec090006d596eb3c35ea41245149c32..36ceccedd82f359b077f058543a4d62af1917299 100644
--- a/test/_fixtures/docker-compose/docker-compose.1.yml
+++ b/test/_fixtures/docker-compose/docker-compose.1.yml
@@ -15,6 +15,9 @@ services:
       restart_policy:
         condition: on-failure
 
+  worker:
+    image: "node:10.0.0"
+
   db:
     image: "postgres:9.4.0"
     volumes:
diff --git a/test/manager/circleci/__snapshots__/extract.spec.js.snap b/test/manager/circleci/__snapshots__/extract.spec.js.snap
index 18a5c5066813c2712364e5e25627d53614df1775..df914446e3fc713bcfd019a6ef60ca191c7a317e 100644
--- a/test/manager/circleci/__snapshots__/extract.spec.js.snap
+++ b/test/manager/circleci/__snapshots__/extract.spec.js.snap
@@ -3,6 +3,7 @@
 exports[`lib/manager/circleci/extract extractDependencies() extracts multiple image lines 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node",
     "currentDepTagDigest": "node",
     "currentDigest": undefined,
@@ -15,6 +16,7 @@ Array [
     "versionScheme": "semver",
   },
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node:4",
     "currentDepTagDigest": "node:4",
     "currentDigest": undefined,
@@ -27,6 +29,7 @@ Array [
     "versionScheme": "semver",
   },
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node:6",
     "currentDepTagDigest": "node:6",
     "currentDigest": undefined,
@@ -39,6 +42,7 @@ Array [
     "versionScheme": "semver",
   },
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node:8.9.0",
     "currentDepTagDigest": "node:8.9.0",
     "currentDigest": undefined,
diff --git a/test/manager/docker-compose/__snapshots__/extract.spec.js.snap b/test/manager/docker-compose/__snapshots__/extract.spec.js.snap
index 9d8b9ac47f507bbe675fc1973a8d890880473689..2a1c4ab1d37fe09cee639ba38b90bca4ca034900 100644
--- a/test/manager/docker-compose/__snapshots__/extract.spec.js.snap
+++ b/test/manager/docker-compose/__snapshots__/extract.spec.js.snap
@@ -13,6 +13,18 @@ Array [
     "lineNumber": 4,
     "versionScheme": "semver",
   },
+  Object {
+    "commitMessageTopic": "Node.js",
+    "currentDepTag": "node:10.0.0",
+    "currentDepTagDigest": "node:10.0.0",
+    "currentDigest": undefined,
+    "currentFrom": "node:10.0.0",
+    "currentTag": "10.0.0",
+    "depName": "node",
+    "dockerRegistry": undefined,
+    "lineNumber": 18,
+    "versionScheme": "semver",
+  },
   Object {
     "currentDepTag": "postgres:9.4.0",
     "currentDepTagDigest": "postgres:9.4.0",
@@ -21,7 +33,7 @@ Array [
     "currentTag": "9.4.0",
     "depName": "postgres",
     "dockerRegistry": undefined,
-    "lineNumber": 18,
+    "lineNumber": 21,
     "versionScheme": "semver",
   },
   Object {
@@ -32,7 +44,7 @@ Array [
     "currentTag": "before",
     "depName": "dockersamples/examplevotingapp_vote",
     "dockerRegistry": undefined,
-    "lineNumber": 28,
+    "lineNumber": 31,
     "versionScheme": "semver",
   },
   Object {
@@ -43,7 +55,7 @@ Array [
     "currentTag": "before",
     "depName": "dockersamples/examplevotingapp_result",
     "dockerRegistry": undefined,
-    "lineNumber": 43,
+    "lineNumber": 46,
     "versionScheme": "semver",
   },
   Object {
@@ -54,7 +66,7 @@ Array [
     "currentTag": undefined,
     "depName": "dockersamples/examplevotingapp_worker",
     "dockerRegistry": undefined,
-    "lineNumber": 59,
+    "lineNumber": 62,
     "versionScheme": "semver",
   },
   Object {
@@ -65,7 +77,7 @@ Array [
     "currentTag": "stable",
     "depName": "dockersamples/visualizer",
     "dockerRegistry": undefined,
-    "lineNumber": 76,
+    "lineNumber": 79,
     "versionScheme": "semver",
   },
 ]
diff --git a/test/manager/docker-compose/extract.spec.js b/test/manager/docker-compose/extract.spec.js
index ff2d129106b3ea2791a4f7edad9ba0e0498f6e54..c3119729ec1c69e5551bc3f3e805c14d796268b0 100644
--- a/test/manager/docker-compose/extract.spec.js
+++ b/test/manager/docker-compose/extract.spec.js
@@ -20,7 +20,7 @@ describe('lib/manager/docker-compose/extract', () => {
     it('extracts multiple image lines', () => {
       const res = extractDependencies(yamlFile, config);
       expect(res.deps).toMatchSnapshot();
-      expect(res.deps).toHaveLength(6);
+      expect(res.deps).toHaveLength(7);
     });
   });
 });
diff --git a/test/manager/docker/__snapshots__/extract.spec.js.snap b/test/manager/docker/__snapshots__/extract.spec.js.snap
index 1ae1fc64cb6ca5ed41abba7d92bb35e8f3f5fa20..da77b141ec88a43b690a63d53ae62fd26a98d2cc 100644
--- a/test/manager/docker/__snapshots__/extract.spec.js.snap
+++ b/test/manager/docker/__snapshots__/extract.spec.js.snap
@@ -3,6 +3,7 @@
 exports[`lib/manager/docker/extract extractDependencies() extracts images on adjacent lines 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node:8.11.3-alpine",
     "currentDepTagDigest": "node:8.11.3-alpine@sha256:d743b4141b02fcfb8beb68f92b4cd164f60ee457bf2d053f36785bf86de16b0d",
     "currentDigest": "sha256:d743b4141b02fcfb8beb68f92b4cd164f60ee457bf2d053f36785bf86de16b0d",
@@ -13,6 +14,7 @@ Array [
     "fromLine": "FROM node:8.11.3-alpine@sha256:d743b4141b02fcfb8beb68f92b4cd164f60ee457bf2d053f36785bf86de16b0d AS node",
     "fromPrefix": "FROM",
     "fromSuffix": "AS node",
+    "language": "docker",
     "versionScheme": "semver",
   },
   Object {
@@ -26,6 +28,7 @@ Array [
     "fromLine": "FROM buildkite/puppeteer:1.1.1 AS puppeteer",
     "fromPrefix": "FROM",
     "fromSuffix": "AS puppeteer",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -34,6 +37,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() extracts multiple FROM tags 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node:6.12.3",
     "currentDepTagDigest": "node:6.12.3",
     "currentDigest": undefined,
@@ -44,6 +48,7 @@ Array [
     "fromLine": "FROM node:6.12.3 as frontend",
     "fromPrefix": "FROM",
     "fromSuffix": "as frontend",
+    "language": "docker",
     "versionScheme": "semver",
   },
   Object {
@@ -57,6 +62,7 @@ Array [
     "fromLine": "FROM python:3.6-slim",
     "fromPrefix": "FROM",
     "fromSuffix": "",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -65,6 +71,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() handles abnoral spacing 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node:8.7.0",
     "currentDepTagDigest": "node:8.7.0",
     "currentDigest": undefined,
@@ -75,6 +82,7 @@ Array [
     "fromLine": "FROM    registry.allmine.info:5005/node:8.7.0",
     "fromPrefix": "FROM",
     "fromSuffix": "",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -83,6 +91,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() handles comments 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node",
     "currentDepTagDigest": "node",
     "currentDigest": undefined,
@@ -93,6 +102,7 @@ Array [
     "fromLine": "FROM node",
     "fromPrefix": "FROM",
     "fromSuffix": "",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -101,6 +111,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() handles custom hosts 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node:8",
     "currentDepTagDigest": "node:8",
     "currentDigest": undefined,
@@ -111,6 +122,7 @@ Array [
     "fromLine": "FROM registry2.something.info/node:8",
     "fromPrefix": "FROM",
     "fromSuffix": "",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -119,6 +131,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() handles custom hosts with namespace 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "someaccount/node:8",
     "currentDepTagDigest": "someaccount/node:8",
     "currentDigest": undefined,
@@ -129,6 +142,7 @@ Array [
     "fromLine": "FROM registry2.something.info/someaccount/node:8",
     "fromPrefix": "FROM",
     "fromSuffix": "",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -137,6 +151,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() handles custom hosts with port 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node:8",
     "currentDepTagDigest": "node:8",
     "currentDigest": undefined,
@@ -147,6 +162,7 @@ Array [
     "fromLine": "FROM registry2.something.info:5005/node:8",
     "fromPrefix": "FROM",
     "fromSuffix": "",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -155,6 +171,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() handles digest 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node",
     "currentDepTagDigest": "node@sha256:eb85fc5b1198f5e1ec025ea07586bdbbf397e7d82df66c90d7511f533517e063",
     "currentDigest": "sha256:eb85fc5b1198f5e1ec025ea07586bdbbf397e7d82df66c90d7511f533517e063",
@@ -165,6 +182,7 @@ Array [
     "fromLine": "FROM node@sha256:eb85fc5b1198f5e1ec025ea07586bdbbf397e7d82df66c90d7511f533517e063",
     "fromPrefix": "FROM",
     "fromSuffix": "",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -173,6 +191,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() handles from as 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node:8.9.0-alpine",
     "currentDepTagDigest": "node:8.9.0-alpine",
     "currentDigest": undefined,
@@ -183,6 +202,7 @@ Array [
     "fromLine": "FROM node:8.9.0-alpine as base",
     "fromPrefix": "FROM",
     "fromSuffix": "as base",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -191,6 +211,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() handles naked dep 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node",
     "currentDepTagDigest": "node",
     "currentDigest": undefined,
@@ -201,6 +222,7 @@ Array [
     "fromLine": "FROM node",
     "fromPrefix": "FROM",
     "fromSuffix": "",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -209,6 +231,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() handles namespaced images 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "mynamespace/node:8",
     "currentDepTagDigest": "mynamespace/node:8",
     "currentDigest": undefined,
@@ -219,6 +242,7 @@ Array [
     "fromLine": "FROM mynamespace/node:8",
     "fromPrefix": "FROM",
     "fromSuffix": "",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -227,6 +251,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() handles tag 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node:8.9.0-alpine",
     "currentDepTagDigest": "node:8.9.0-alpine",
     "currentDigest": undefined,
@@ -237,6 +262,7 @@ Array [
     "fromLine": "FROM node:8.9.0-alpine",
     "fromPrefix": "FROM",
     "fromSuffix": "",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -245,6 +271,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() handles tag and digest 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node:8.9.0",
     "currentDepTagDigest": "node:8.9.0@sha256:eb85fc5b1198f5e1ec025ea07586bdbbf397e7d82df66c90d7511f533517e063",
     "currentDigest": "sha256:eb85fc5b1198f5e1ec025ea07586bdbbf397e7d82df66c90d7511f533517e063",
@@ -255,6 +282,7 @@ Array [
     "fromLine": "FROM node:8.9.0@sha256:eb85fc5b1198f5e1ec025ea07586bdbbf397e7d82df66c90d7511f533517e063",
     "fromPrefix": "FROM",
     "fromSuffix": "",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -263,6 +291,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() is case insensitive 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node",
     "currentDepTagDigest": "node",
     "currentDigest": undefined,
@@ -273,6 +302,7 @@ Array [
     "fromLine": "From node",
     "fromPrefix": "From",
     "fromSuffix": "",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
@@ -281,6 +311,7 @@ Array [
 exports[`lib/manager/docker/extract extractDependencies() skips named multistage FROM tags 1`] = `
 Array [
   Object {
+    "commitMessageTopic": "Node.js",
     "currentDepTag": "node:6.12.3",
     "currentDepTagDigest": "node:6.12.3",
     "currentDigest": undefined,
@@ -291,6 +322,7 @@ Array [
     "fromLine": "FROM node:6.12.3 as frontend",
     "fromPrefix": "FROM",
     "fromSuffix": "as frontend",
+    "language": "docker",
     "versionScheme": "semver",
   },
 ]
diff --git a/test/workers/repository/updates/__snapshots__/flatten.spec.js.snap b/test/workers/repository/updates/__snapshots__/flatten.spec.js.snap
index ad029e91c046d1182539bc13dbafc4dd4f9a042b..9f9f0f69c2bf37aa5c6e5cae9abe04b4cdf3593d 100644
--- a/test/workers/repository/updates/__snapshots__/flatten.spec.js.snap
+++ b/test/workers/repository/updates/__snapshots__/flatten.spec.js.snap
@@ -216,5 +216,78 @@ Array [
     "warnings": Array [],
     "yarnrc": null,
   },
+  Object {
+    "assignees": Array [],
+    "automerge": false,
+    "automergeComment": "automergeComment",
+    "automergeType": "pr",
+    "branchName": "{{{branchPrefix}}}{{{managerBranchPrefix}}}{{{branchTopic}}}",
+    "branchPrefix": "renovate/",
+    "branchTopic": "{{{depNameSanitized}}}-{{{newMajor}}}.x",
+    "bumpVersion": null,
+    "commitBody": null,
+    "commitMessage": "{{{commitMessagePrefix}}} {{{commitMessageAction}}} {{{commitMessageTopic}}} {{{commitMessageExtra}}} {{{commitMessageSuffix}}}",
+    "commitMessageAction": "Update",
+    "commitMessageExtra": "to {{#if isMajor}}v{{{newMajor}}}{{else}}{{#unless isRange}}v{{/unless}}{{{newValue}}}{{/if}}",
+    "commitMessagePrefix": null,
+    "commitMessageTopic": "{{{depName}}} Docker tag",
+    "copyLocalLibs": false,
+    "depName": "amd64/node",
+    "depNameSanitized": "node",
+    "errors": Array [],
+    "gitAuthor": null,
+    "gitPrivateKey": null,
+    "group": Object {
+      "branchTopic": "{{{groupSlug}}}",
+      "commitMessageTopic": "{{{groupName}}} Docker tags",
+      "prBody": "This Pull Request updates Dockerfiles to use image digests.\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n{{#each upgrades as |upgrade|}}\\n-   {{#if repositoryUrl}}[{{upgrade.depName}}]({{upgrade.repositoryUrl}}){{else}}\`{{{depName}}}\`{{/if}}: \`{{upgrade.newDigest}}\`\\n{{/each}}\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
+    },
+    "groupName": null,
+    "groupSlug": null,
+    "labels": Array [],
+    "language": "docker",
+    "lazyGrouping": true,
+    "lockFileMaintenance": Object {
+      "branchTopic": "lock-file-maintenance",
+      "commitMessageAction": "Lock file maintenance",
+      "commitMessageExtra": null,
+      "commitMessageTopic": null,
+      "enabled": true,
+      "groupName": null,
+      "prBody": "This Pull Request updates \`package.json\` lock files to use the latest dependency versions.\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
+      "rebaseStalePrs": true,
+      "recreateClosed": true,
+      "schedule": Array [
+        "before 5am on monday",
+      ],
+    },
+    "manager": "docker",
+    "managerBranchPrefix": "",
+    "newValue": "10.0.1",
+    "npmToken": null,
+    "npmrc": null,
+    "packageFile": "Dockerfile",
+    "prBody": "This Pull Request updates Docker base image \`{{{depName}}}\` from tag \`{{{currentTag}}}\` to new tag \`{{{newTag}}}\`. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/docker\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
+    "prConcurrentLimit": 0,
+    "prCreation": "immediate",
+    "prHourlyLimit": 0,
+    "prNotPendingHours": 25,
+    "prTitle": null,
+    "rebaseStalePrs": null,
+    "recreateClosed": false,
+    "requiredStatusChecks": Array [],
+    "reviewers": Array [],
+    "schedule": Array [],
+    "semanticCommitScope": "deps",
+    "semanticCommitType": "chore",
+    "semanticCommits": null,
+    "statusCheckVerify": false,
+    "timezone": null,
+    "unpublishSafe": false,
+    "updateLockFiles": true,
+    "updateNotScheduled": true,
+    "warnings": Array [],
+    "yarnrc": null,
+  },
 ]
 `;
diff --git a/test/workers/repository/updates/flatten.spec.js b/test/workers/repository/updates/flatten.spec.js
index 90f0927468dfd61eea8eeec69aea16030b6e9898..6245d303d8f1caf8de97e9cf0fb3cbc2e12df124 100644
--- a/test/workers/repository/updates/flatten.spec.js
+++ b/test/workers/repository/updates/flatten.spec.js
@@ -24,6 +24,18 @@ describe('workers/repository/updates/flatten', () => {
             ],
           },
         ],
+        docker: [
+          {
+            packageFile: 'Dockerfile',
+            deps: [
+              {
+                depName: 'amd64/node',
+                language: 'docker',
+                updates: [{ newValue: '10.0.1' }],
+              },
+            ],
+          },
+        ],
       };
       const res = await flattenUpdates(config, packageFiles);
       expect(res).toMatchSnapshot();