mirror of
https://github.com/freedomofpress/dangerzone.git
synced 2025-04-28 09:52:37 +02:00
327ab8791f
Use PyMuPDF (AGPL-licensed) within the container conversion to replace the pdf conversion to RGB. This massively simplifies the code since PyMuPDF is a native python library.
63 lines
2.5 KiB
Docker
63 lines
2.5 KiB
Docker
FROM alpine:latest
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ARG TESSDATA_CHECKSUM=d0e3bb6f3b4e75748680524a1d116f2bfb145618f8ceed55b279d15098a530f9
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ARG H2ORESTART_CHECKSUM=5db816a1e57b510456633f55e693cb5ef3675ef8b35df4f31c90ab9d4c66071a
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# Install dependencies
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RUN apk --no-cache -U upgrade && \
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apk --no-cache add \
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ghostscript \
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libreoffice \
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openjdk8 \
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poppler-utils \
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poppler-data \
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python3 \
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py3-magic \
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tesseract-ocr \
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font-noto-cjk
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RUN apk --no-cache add --virtual .builddeps g++ gcc make python3-dev py3-pip \
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&& pip install --upgrade PyMuPDF \
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&& apk del .builddeps # FIXME freeze w/ hashes
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# Download the trained models from the latest GitHub release of Tesseract, and
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# store them under /usr/share/tessdata. This is basically what distro packages
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# do under the hood.
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#
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# Because the GitHub release contains more files than just the trained models,
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# we use `find` to fetch only the '*.traineddata' files in the top directory.
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#
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# Before we untar the models, we also check if the checksum is the expected one.
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RUN mkdir tessdata && cd tessdata \
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&& TESSDATA_VERSION=$(wget -O- -nv https://api.github.com/repos/tesseract-ocr/tessdata_fast/releases/latest \
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| sed -n 's/^.*"tag_name": "\([0-9.]\+\)".*$/\1/p') \
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&& wget https://github.com/tesseract-ocr/tessdata_fast/archive/$TESSDATA_VERSION/tessdata_fast-$TESSDATA_VERSION.tar.gz \
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&& echo "$TESSDATA_CHECKSUM tessdata_fast-$TESSDATA_VERSION.tar.gz" | sha256sum -c \
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&& tar -xzvf tessdata_fast-$TESSDATA_VERSION.tar.gz -C . \
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&& find . -name '*.traineddata' -maxdepth 2 -exec cp {} /usr/share/tessdata \; \
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&& cd .. && rm -r tessdata
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RUN mkdir /libreoffice_ext && cd libreoffice_ext \
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&& H2ORESTART_FILENAME=h2orestart.oxt \
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&& H2ORESTART_VERSION="v0.5.7" \
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&& wget https://github.com/ebandal/H2Orestart/releases/download/$H2ORESTART_VERSION/$H2ORESTART_FILENAME \
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&& echo "$H2ORESTART_CHECKSUM $H2ORESTART_FILENAME" | sha256sum -c \
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&& install -dm777 "/usr/lib/libreoffice/share/extensions/"
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ENV PYTHONPATH=/opt/dangerzone
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RUN mkdir -p /opt/dangerzone/dangerzone
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RUN touch /opt/dangerzone/dangerzone/__init__.py
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COPY conversion /opt/dangerzone/dangerzone/conversion
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# Add the unprivileged user
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RUN adduser -s /bin/sh -D dangerzone
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USER dangerzone
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# /tmp/input_file is where the first convert expects the input file to be, and
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# /tmp where it will write the pixel files
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#
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# /dangerzone is where the second script expects files to be put by the first one
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#
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# /safezone is where the wrapper eventually moves the sanitized files.
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VOLUME /dangerzone /tmp/input_file /safezone
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