[Docker/Reporting] Stack Docker image doesn't provide enough language fonts for Reporting screen captures

[tsullivan]

Kibana version: 7.6.2
Original install method (e.g. download page, yum, from source, etc.): stack Docker image
Describe the bug:
Dashboards with text in some Asian languages will be unavailable in Reporting, if the OS does not have the necessary language fonts provided.

Steps to reproduce:

1. Set up Kibana with the stack docker image: docker.elastic.co/kibana/kibana:7.6.2
2. Create a Markdown visualization
3. Paste the text from selecting a language in Wikipedia into the Markdown.

Save the visualization and create a PNG report.

Expected behavior:
The visualization should look the same way it does in the user's browser. Instead, a few Asian language text is unavailable.

Screenshots (if relevant):
Kibana UI:

The generated report:

Errors in browser console (if relevant):

Provide logs and/or server output (if relevant):

Any additional context:

[elasticmachine]

Pinging @elastic/kibana-operations (Team:Operations)

[tsullivan]

Additional context: there is an effort in Cloud to use the stack image instead of a custom one. It makes this issue necessary for providing full language support for Reporting in Cloud.

[tylersmalley]

@tsullivan is the issue we're missing some/all of these dependencies mentioned in https://www.elastic.co/guide/en/kibana/current/reporting-troubleshooting.html#reporting-troubleshooting-system-dependencies?

[tsullivan]

@tylersmalley in looking at that doc once more, it doesn't look like the "Debian/Ubuntu" section has much listed for international fonts. It could be missing from the documentation.

[jbudz]

apt-get install fonts-noto fonts-noto-cjk fonts-indic

1. noto
2. indic

[tsullivan]

@jbudz can you confirm those are Debian distro instructions that should also be written into the documentation for setting up Reporting? https://www.elastic.co/guide/en/kibana/current/reporting-troubleshooting.html#reporting-troubleshooting-system-dependencies

How do the changes get rolled out to the image? Is there a process for it or are you already driving it? 😃

[jbudz]

Ah yeah those are psuedo-code. Definitely will depend on the distro whether those are available, I can check our docker images. I can take this after tomorrow.