troubleshooting: document running on alpine

From @jamrizzi on https://github.com/GoogleChrome/puppeteer/issues/379#issuecomment-358215741, we should add notes to troubleshooting.md to help users.

Running on Alpine

The newest Chromium package of Chrome supported on Alpine is 63, which was the version of Chrome bundled with Puppeteer v0.11.0.

Example Dockerfile:

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

# Help prevent zombie chrome processes
ADD https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64 /usr/local/bin/dumb-init
RUN chmod +x /usr/local/bin/dumb-init

COPY . /app/
WORKDIR app

# Install deps for server.
RUN yarn

# Skip downloading Chromium when installing puppeteer. We'll use the installed package.
ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD true

# Use Puppeteer 0.11.0 b/c it bundles Chromium 63.
RUN yarn add puppeteer@0.11.0

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 user as non privileged.
USER pptruser

EXPOSE 8080

ENTRYPOINT ["dumb-init", "--"]
CMD ["yarn", "start"]

Launching Chrome:

const browser = await puppeteer.launch({
  executablePath: '/usr/bin/chromium-browser',
  args: ['--disable-dev-shm-usage']
});

[clayrisser]

The latest version of puppeteer is not supported by the latest version of chrome alpine supports. Sorry, it’s just the way it is right now.

[clayrisser]

@fadc80 chrome doesn’t install twice if you use set PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true