Installer Library
This folder contains the Dockerfiles for building certain installers or libraries, which are then pulled into the main image.
jbig2enc
Why
JBIG is an image coding which can achieve better compression of images for PDFs.
What
The Docker image builds a shared library file and utility, which is copied into the correct location in the final image.
Updating
- Ensure the given qpdf version is present in Debian bookworm
- Update
.build-config.jsonto the given version - If the Debian specific version has incremented, update
Dockerfile.qpdf
See Also:
psycopg2
Why
The pre-built wheels of psycopg2 are built on Debian 9, which provides a quite old version of libpq-dev. This causes issue with authentication methods.
What
The image builds psycopg2 wheels on Debian 10 and places the produced wheels into /usr/src/wheels/.
See Also:
qpdf
Why
qpdf and it's library provide tools to read, manipulate and fix up PDFs. Version 11 is also required by pikepdf 6+ and Debian 9 does not provide above version 10.
What
The Docker image cross compiles .deb installers for each supported architecture of the main image. The installers are placed in /usr/src/qpdf/${QPDF_VERSION}/${TARGETARCH}${TARGETVARIANT}/
pikepdf
Why
Required by OCRMyPdf, this is a general purpose library for PDF manipulation in Python via the qpdf libraries.
What
The built wheels are placed into /usr/src/wheels/