On Tue, 13 Apr 2021, Subhajit Das wrote:
The Tika Docker image (full) uses ‘ttf-mscorefonts-installer’. The
licence used by it is Microsoft licence and dosen’t seems to allow
commercial use.
Can any please confirm if it is ok to use? Or should a customized
version to be used for production?
Licensing of docker images can be complex... There's the licenses of each
image layer's dockerfile, the licenses of the things those image layers
pull in, and possibly a license for the resulting image.
Depending on if you publish a certain layer, or just use it locally, the
distribution clause in a lot of licenses may or may not get triggered. Not
all docker image hosting services fully comply with all license terms, eg
providing the source for hosted GPL binaries. It's complicated, and fairly
easy to end up in hot water if you don't do your due diligence!
If you have very specific needs, I would suggest finding a base image you
are happy with license-wise, then grab just the Tika components you want
on top of that. Use our dockerfile as a guide of how to install and run
Tika.
Apache Tika itself, and all required dependencies are available under the
Apache License v2 or similar, see
https://www.apache.org/legal/resolved.html for the general policy we work
to. Some of the command line tools we can call out to, and things they
use, may be under other licenses (especially copyleft ones), but those are
all optional.
Nick
