Alpine build

[mikehaertl]

There's already a (docker based) build for alpine over here:

https://github.com/Surnet/docker-wkhtmltopdf

The build setup could be copied as a starting point.

It basically works - but has issues with some fonts not being rendered correctly (See Surnet/docker-wkhtmltopdf#1). We've boiled that down to:

• fontconfig works
• Serif fonts are available on the system and reported by fontconfig
• The match string that fontconfig receives from wkhtmltopdf misses Serif fonts - even if used in CSS

/cc @chdanielmueller Maybe you can contribute something here? It would be awesome to have an "official" alpine build of wkhtmltopdf and you seem to already have solved most of the hurdles.

As much as I'd like to help, I have not looked into the build process at all and I'm not really an expert here.

[ashkulz]

I guess I'll need to incorporate the musl changes into Qt as well, as I don't want to apply patches on the fly ... will try to look into it this weekend.

[ashkulz]

@alloylab: are you planning to make a PR for this?

[alloylab]

yes I am, got behind with EOQ... just successfully compile 0.12.5 on alpine... https://git.alloylab.com/open-source/wkhtmltopdf/tags/0.12.5-070518 will submit PR on here

[ashkulz]

Please submit PR for Qt patches first, then over here.

[dcelasun]

Any progress on this?

[sir-gon]

Oh pls! I i'm doing a lot of research for a headless solution for PDF generation and wkhtmltopdf is the best until now, but I have produced a huge docker image!

Alpine aproach would be perfect

[jtraulle]

@sir-gon See my Dockerfile for this : https://github.com/Opencomp/Dockerfiles/blob/master/wkhtmltopdf/Dockerfile

[chdanielmueller]

@sir-gon or feel free to use https://github.com/Surnet/docker-wkhtmltopdf

[mikehaertl]

@chdanielmueller @sir-gon But the font issue mentioned in the issue description still isn't fixedin the Surnet images, right? This makes those images only partially useful.

[chdanielmueller]

@mikehaertl That's right that issue is still open. A workaround is to use fonts loaded from the web. e.g. Google Fonts

@jtraulle Do you have any issues in your image with false fonts?

[jtraulle]

@chdanielmueller I don't think so. Try it a tell me ;)

[cjimti]

I have not yet experienced any font issues. It is possible I may just be using my build on such a limited set of pages that I have not noticed it. I use a binary build for alpine:3.7 from https://github.com/madnight/docker-alpine-wkhtmltopdf and add fonts. My docker file is here: https://github.com/txn2/n2pdf/blob/master/Dockerfile

https://github.com/txn2/n2pdf

I use this pretty heavily in my txPdf project: https://imti.co/webpage-to-pdf-microservice/