Make imagemagick available at docker images

[caduvieira]

To be able to use sphinx plugin sphinx.ext.imgconverter to convert svg to png we need imagemagick available.

Refers: readthedocs/readthedocs.org#3979

[mgeier]

@caduvieira IMHO it looks better most of the time if SVG images are converted to PDF images (instead of PNG) by using the sphinxcontrib-svg2pdfconverter module, which does the conversion without rasterizing the image.

See #78 and #79.

[humitos]

Hi all! imagemagick was installed in our latest testing image 5.0rc1 (not released yet). I'd like to know if you want to help us testing it. In that case, please let me know what are the projects you are interested on testing it and I will apply this Docker image for its building process.

[caduvieira]

The project is:
servicosgovbr/manual-avaliacao
https://readthedocs.org/projects/manual-avaliacao/

The SVG image is in this anchor:
https://manual-avaliacao.readthedocs.io/pt_BR/latest/apresentacao.html#fluxo-simplificado-das-apis

Could you please test it? Thanks!

[humitos]

Hi @caduvieira! I enabled the new Docker image to your project and I triggered a new build of latest version. Please, let me know if it did work as you expected. Thanks!

[humitos]

@caduvieira it seems that you don't have the extension enabled/installed in your conf.py; readthedocs/readthedocs.org#3979 (comment)

[caduvieira]

The build failed. I will try to correct this but i need to investigate.

https://pastebin.com/t9cYL3J4