Unfortunately because of this issue
https://github.com/docker/hub-feedback/issues/292
Docker Hub effectively automatically changes directory to the location
of Dockerfile, meaning needed files are not in the right places, so
this has to be reverted.
This reverts commit 65c9a07dde.
[ci skip]
Debian now has a few disadvantages:
-there is no convenient PPA for Debian tesseract 4.0, but there is for
Ubuntu
-Ubuntu sets locale to UTF-8 automatically removing the need to do this
All three ocrmypdf docker images are now based on a common Ubuntu
16.10 image, derived from the one used to build ocrmypdf-tess4.
-polyglot now differs from -tess4 only by opting into the tess4 PPA.
Both Ubuntu 16.10 and Debian stretch use tesseract 3.04.01 now making
the sharp.ttf patch unnecessary. /etc/apt/sources has been unused for a
while now both have newer Ghostscripts.
James R. Barlow