Need for X server inside of docker container

[jondoe1337]

When running inside of a docker container (Ubuntu 14.04.2 LTS with wkhtmltopdf 0.9.9-4) running the test: wkhtmltopdf http://google.com google.pdf
Results in:
wkhtmltopdf: cannot connect to X server
Is this a version problem?

[ghost]

@jondoe1337 You actually don't need to run a full Xserver within the container. You can simulate X connection using the xvfb tool. See my comment in #3119. For a base container to run xvfb checkout: https://github.com/metal3d/docker-xvfb

[jondoe1337]

We already used xfvb. But under certain circumstances xfvb crashes...

Anyways - saying that it is headless but it needs a framebuffer is irritating.

[ghost]

interesting, would love to hear more about those details as we are prototyping using xvfb. The documentation might be somewhat misleading, but as I understand it this tool is not headless.

[jondoe1337]

Well the Readme.md says These run entirely "headless" and do not require a display or display service.

We run the xvfb inside of a node.js application which is started with our own Dockerfile.

I would only suggest to add a note in the Readme.

[ashkulz]

@jondoe1337: you're probably running the distribution version of wkhtmltopdf, which doesn't use the patched Qt. You'll need to use the version from the downloads page.