add back Dockerfile

Dockerfile

@@ -0,0 +1,33 @@
+FROM node:9-alpine
+
+# Installs latest Chromium (63) package.
+RUN apk update && apk upgrade && \
+    echo @edge http://nl.alpinelinux.org/alpine/edge/community >> /etc/apk/repositories && \
+    echo @edge http://nl.alpinelinux.org/alpine/edge/main >> /etc/apk/repositories && \
+    apk add --no-cache \
+      chromium@edge \
+      nss@edge
+
+WORKDIR /app
+
+COPY package.json ./
+COPY yarn.lock ./
+
+RUN yarn
+
+COPY . .
+
+RUN yarn build
+
+# Add user so we don't need --no-sandbox.
+RUN addgroup -S pptruser && adduser -S -g pptruser pptruser \
+    && mkdir -p /home/pptruser/Downloads \
+    && chown -R pptruser:pptruser /home/pptruser \
+    && chown -R pptruser:pptruser /app
+
+# Run everything after as non-privileged user.
+USER pptruser
+
+ENV NODE_ENV production
+EXPOSE 3000
+CMD [ "yarn", "start" ]

server.js

@@ -5,7 +5,7 @@ const next = require('next')
 const puppeteer = require('puppeteer')
 
 const port = parseInt(process.env.PORT, 10) || 3000
-const dev = process.env.NODE_ENV !== 'production' && !process.env.NOW
+const dev = process.env.NODE_ENV !== 'production'
 const app = next({ dev })
 const handle = app.getRequestHandler()
 
@@ -21,12 +21,12 @@ function wrap(handler) {
     })
 }
 
-const puppeteerParams = process.env.DOCKER
-  ? {
+const puppeteerParams = dev
+  ? {}
+  : {
       executablePath: '/usr/bin/chromium-browser',
       args: ['--no-sandbox', '--disable-setuid-sandbox']
     }
-  : {}
 
 app
   .prepare()