Calibre dont have enough fonts to show non latin language

[mahabuta]

Hi, I was glade when I saw this project and found it could help me a lot with my books.

But when I opened my existing library, I found out that this docker image doesnt contains enough fonts to show non latin language such as Chinese and Japanese. I know it's not quite usefull for you to ship lots of unnessary CJK fonts taking too much place, but can you consider providing a folderpath or Variables for me to overwrite the default one so I can use my own fonts?

[aptalca]

Hi, I'm trying to understand if this is a docker image issue or an issue with calibre. For the former, I can try to fix, for the latter, I would advise contacting the developers of calibre.

Can you install calibre on a separate machine directly (without docker) and see if the fonts are displayed correctly?

I'm not sure if those fonts are supported by the OS or the app.

Thanks

[mahabuta]

yes, the calibre on my windows works ok, can show CJK figures charactors correctly.
as shown bellow,

due to lack of relevent knowledge, I am not sure if it's only font problem or the system itself lacking relevent codepages,
but I am certain that all the fonts I can see from the docker-rdp-calibre setting, none of them contains CJK characters, or say all of them are for latin charactors only. and on my own computer I can see many many more fonts. and the problem remains if I set the docker-rdp-calibre system language to Chinese or so.

will you please give me a folder path for me to overwrite the current one, so I can test if my guess is correct or not, I have see the /usr/share/fonts or some thing like that, but there are many subfolders inside, ,I dont quite understand which is the right one >_<

[oit63]

@ikonome actually, this is the problem of English Linux System, the origin system does not contain any Chinese fonts. So we should install it by ourselves .

here is my Solution

enter your container with bash
#(p.s. rdp-calibre is my container name replace it with yours )
docker exec -it rdp-calibre bash

apt-get install -y --force-yes --no-install-recommends fonts-wqy-microhei
apt-get install -y --force-yes --no-install-recommends ttf-wqy-zenhei

#now we exit the container
exit
#then reboot the container with command
docker restart rdp-calibre

now everything is OK .

results:

references:
https://segmentfault.com/a/1190000005640352

[oit63]

@ikonome if you do not know how to do with it， you could simply search dochurch in docker hub and use my fork-mod image
dochurch/docker-rdp-calibre