feat(docker): add document-processing runtime dependencies

Add fonts (Liberation, DejaVu) and qpdf to the existing apt-install layer
to enable LibreOffice (already installed upstream) to render documents
with proper font fallback, and to provide PDF post-processing.

Add Python libs (pypdf, pdfplumber, markitdown[pptx]) and Node libs
(docx, pptxgenjs) used by document-processing skills mounted at runtime
via LibreChat's native Skills module.

No new apt layer — consolidated into the existing block (line 49-56).
No image bloat from libreoffice-core (transitive dependency of
libreoffice-{writer,calc,impress}) or fonts-noto-core (not used by
audited skills, which target Latin-script documents).

Author: Damien

Dockerfile

@@ -53,6 +53,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     libpulse-dev libsdl2-dev libsdl2-mixer-dev libsdl2-image-dev libsdl2-ttf-dev \
     antiword unrtf \
     libreoffice-impress libreoffice-writer libreoffice-calc libreoffice-common \
+    fonts-liberation fonts-dejavu-core \
+    qpdf \
     && rm -rf /var/lib/apt/lists/*
 
 COPY docker/requirements/python-core.txt /tmp/python-core.txt

docker/requirements/nodejs.txt

@@ -33,3 +33,5 @@ zod
 handlebars
 cheerio
 marked
+docx
+pptxgenjs

docker/requirements/python-documents.txt

@@ -2,6 +2,8 @@
 
 # PDF
 PyPDF2>=3.0
+pypdf>=4.0
+pdfplumber>=0.10
 pdfminer.six>=20221105
 pdfminer>=20191125
 pdf2image>=1.16
@@ -10,6 +12,7 @@ reportlab>=4.0
 # Office documents
 python-docx>=1.1
 python-pptx>=0.6
+markitdown[pptx]>=0.1
 mammoth>=1.6
 docx2txt>=0.8
 docx2python>=2.0