apptask: only move app uses localstorage addon

src/docker.js

@@ -164,15 +164,14 @@ async function downloadImage(manifest) {
 async function getVolumeMounts(app) {
     assert.strictEqual(typeof app, 'object');
 
-    let mounts = [];
-
     if (app.mounts.length === 0) return [];
 
     const result = await volumes.list();
-
-    let volumesById = {};
+    const volumesById = {};
     result.forEach(r => volumesById[r.id] = r);
 
+    const mounts = [];
+
     for (const mount of app.mounts) {
         const volume = volumesById[mount.volumeId];
 
@@ -190,8 +189,7 @@ async function getVolumeMounts(app) {
 async function getAddonMounts(app) {
     assert.strictEqual(typeof app, 'object');
 
-    let mounts = [];
-
+    const mounts = [];
     const addons = app.manifest.addons;
     if (!addons) return mounts;
 
@@ -265,8 +263,7 @@ async function createSubcontainer(app, name, cmd, options) {
     assert(!cmd || Array.isArray(cmd));
     assert.strictEqual(typeof options, 'object');
 
-    let isAppContainer = !cmd; // non app-containers are like scheduler
-
+    const isAppContainer = !cmd; // non app-containers are like scheduler
     const manifest = app.manifest;
     const exposedPorts = {}, dockerPortBindings = { };
     const domain = app.fqdn;