[Feature] Versioned Docker files with browsers

[pavelfeldman]

Docker files for Playwright should be versioned with Playwright versions and come with the browsers pre-installed. Rationale:

• Docker files are potentially updated every time Playwright is updated due to the browser dependencies
• It does not make sense to download browsers from within the library, because it only adds work for the users that have to deal with the environment variables and cache the browsers.
• We should also provide per-vendor images out of the box

@aslushnikov, wdyt?

Actions:

• version docker images similarly to playwright releases
• bake browsers into docker images
• release per-vendor docker images

[DJ-Glock]

Very good point.
At the moment we have to make our internal dockerfile for this. But we use only for chromium.

Also it would be great to have a yarn installed as requested here:
#3108

Putting our dockerfile here, probably it will save some time for anybody.

FROM mcr.microsoft.com/playwright:bionic

USER root

RUN  apt-get update \
   && apt-get install -y sudo \
   && usermod -aG sudo pwuser \
   && echo "pwuser ALL=(ALL) NOPASSWD: ALL" | tee -a /etc/sudoers \
   && apt-get install -y gnupg2 \
   && apt-get install -y wget --no-install-recommends \
   && curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - \
   && echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list \
   && apt update \
   && apt install yarn \
   && yarn add playwright-chromium@1.2.1
   
USER pwuser