Configure for deployment with zeit now (#1308)

I'm experimenting with Zeit Now as another hosting option. These changes enable a working deployment.

doc/self-hosting.md

@@ -104,6 +104,17 @@ machine.
 [shields.example.env]: ../shields.example.env
 
 
+Zeit Now
+--------
+
+To deploy using Zeit Now:
+
+```console
+npm run build  # Not sure why, but this needs to be run before deploying.
+now
+```
+
+
 Server secrets
 --------------
 

lib/github-auth.js

@@ -1,5 +1,6 @@
 'use strict';
 
+const path = require('path');
 const crypto = require('crypto');
 const log = require('./log');
 const queryString = require('query-string');
@@ -13,8 +14,9 @@ const mapKeys = require('lodash.mapkeys');
 // with a JsonSave object.
 let githubUserTokens = {data: []};
 
-function scheduleAutosaving() {
-  const githubUserTokensFile = './private/github-user-tokens.json';
+function scheduleAutosaving(config) {
+  const { dir: persistenceDir } = config;
+  const githubUserTokensFile = path.resolve(persistenceDir, 'github-user-tokens.json');
   autosave(githubUserTokensFile, {data: []}).then(save => {
     githubUserTokens = save;
     for (let i = 0; i < githubUserTokens.data.length; i++) {

lib/server-config.js

@@ -44,6 +44,9 @@ const config = {
   cors: {
     allowedOrigin,
   },
+  persistence: {
+    dir: process.env.PERSISTENCE_DIR || './private',
+  },
   services: {
     github: {
       baseUri: process.env.GITHUB_URL || 'https://api.github.com',

now.json

@@ -0,0 +1,25 @@
+{
+  "name": "shields",
+  "files": [
+    "*.js",
+    "*.png",
+    "build/",
+    "frontend/",
+    "lib/",
+    "logo/",
+    "pages/",
+    "public/",
+    "static/",
+    "templates/",
+    "!**/*.spec.js",
+    "!**/*.integration.js"
+  ],
+  "env": {
+    "PERSISTENCE_DIR": "/tmp/persistence",
+    "SHIELDS_ANALYTICS_FILE": "/tmp/analytics.json"
+  },
+  "type": "npm",
+  "engines": {
+    "node": "8.x"
+  }
+}

package.json

@@ -64,6 +64,7 @@
     "heroku-postbuild": "npm run build",
     "analyze": "ANALYZE=true LONG_CACHE=false BASE_URL=https://img.shields.io npm run build",
     "start:server": "node server 8080 ::",
+    "now-start": "node server",
     "prestart": "npm run frontend-depcheck",
     "start": "concurrently --names server,frontend \"ALLOWED_ORIGIN=http://localhost:3000 npm run start:server\" \"BASE_URL=http://[::]:8080 next dev\""
   },

server.js

@@ -138,7 +138,7 @@ analytics.load();
 analytics.scheduleAutosaving();
 analytics.setRoutes(camp);
 
-githubAuth.scheduleAutosaving();
+githubAuth.scheduleAutosaving({ dir: config.persistence.dir });
 if (serverSecrets && serverSecrets.gh_client_id) {
   githubAuth.setRoutes(camp);
 }