Building a minimum viable PhantomJS 2 Docker image

As part of something I’ve been hacking on the side, I have a need to run a bunch of PhantomJS 2.0 containers on a Docker host. While I could’ve just built an image that includes its binary and consider it done, there is currently a need to build the phantomjs binary from sources for Linux machines. Not only that is a PITA but it also requires us to do some “juggling” to clean up build-time dependencies and it still produces a somewhat large Docker image as a result (something in the ~400mb). Read more