Merge pull request 'Upload files to "pdf"' (#4) from p3 into master

Reviewed-on: http://10.2.0.2:3000/jason/cpas/pulls/4

pdf/generator.js

@@ -1,8 +1,9 @@
-const puppeteer = require('puppeteer');
-const buildHtml = require('./template');
+const puppeteer  = require('puppeteer-core');
+const buildHtml  = require('./template');
 
 /**
  * Renders the violation document HTML via Puppeteer and returns a PDF buffer.
+ * Uses the system Chromium installed in the Alpine image (no separate download).
  * @param {object} violation  - Row from violations JOIN employees
  * @param {object} score      - Row from active_cpas_scores
  * @returns {Buffer}
@@ -26,8 +27,8 @@ async function generatePdf(violation, score) {
         await page.setContent(html, { waitUntil: 'networkidle0' });
 
         const pdf = await page.pdf({
-            format:             'Letter',
-            printBackground:    true,
+            format:              'Letter',
+            printBackground:     true,
             margin: {
                 top:    '0.6in',
                 bottom: '0.7in',