fix: use companion agent for docker upgrade

client/components/admin/admin-system.vue

@@ -27,7 +27,7 @@
                     v-list-item-subtitle {{ info.latestVersion }}
                   v-list-item-action
                     v-list-item-action-text {{ $t('admin:system.published') }} {{ info.latestVersionReleaseDate | moment('from') }}
-              v-card-actions(v-if='upgradeCapable && !isLatestVersion && info.platform === `docker`', :class='$vuetify.theme.dark ? `grey darken-3-d5` : `indigo lighten-5`')
+              v-card-actions(v-if='info.upgradeCapable && !isLatestVersion && info.platform === `docker`', :class='$vuetify.theme.dark ? `grey darken-3-d5` : `indigo lighten-5`')
                 .caption.indigo--text.pl-3(:class='$vuetify.theme.dark ? `text--lighten-4` : ``') Wiki.js can perform the upgrade to the latest version for you.
                 v-spacer
                 v-btn.px-3(

package.json

@@ -60,7 +60,6 @@
     "dependency-graph": "0.8.0",
     "diff": "4.0.1",
     "diff2html": "2.11.3",
-    "dockerode": "2.5.8",
     "dotize": "0.3.0",
     "elasticsearch6": "npm:@elastic/elasticsearch@6",
     "elasticsearch7": "npm:@elastic/elasticsearch@7",

server/graph/resolvers/system.js

@@ -7,7 +7,7 @@ const path = require('path')
 const fs = require('fs-extra')
 const moment = require('moment')
 const graphHelper = require('../../helpers/graph')
-const Docker = require('dockerode')
+const request = require('request-promise')
 
 /* global WIKI */
 
@@ -70,22 +70,17 @@ module.exports = {
     },
     async performUpgrade (obj, args, context) {
       try {
-        const dockerEngine = new Docker({ socketPath: '/var/run/docker.sock' })
-        await dockerEngine.run('containrrr/watchtower', ['--cleanup', '--run-once', 'wiki'], process.stdout, {
-          HostConfig: {
-            AutoRemove: true,
-            Mounts: [
-              {
-                Target: '/var/run/docker.sock',
-                Source: '/var/run/docker.sock',
-                Type: 'bind'
-              }
-            ]
-          }
+        if (process.env.UPGRADE_COMPANION) {
+          await request({
+            method: 'POST',
+            uri: 'http://wiki-update-companion/upgrade'
           })
           return {
             responseResult: graphHelper.generateSuccess('Upgrade has started.')
           }
+        } else {
+          throw new Error('You must run the wiki-update-companion container and pass the UPGRADE_COMPANION env var in order to use this feature.')
+        }
       } catch (err) {
         return graphHelper.generateError(err)
       }
@@ -169,7 +164,7 @@ module.exports = {
       return WIKI.config.telemetry.clientId
     },
     async upgradeCapable () {
-      return fs.pathExists('/var/run/docker.sock')
+      return !_.isNil(process.env.UPGRADE_COMPANION)
     },
     workingDirectory () {
       return process.cwd()