screenshot-service/Dockerfile

FROM python:3.11.0a5-alpine3.15

# inspired by https://github.com/darktohka/pytesseract-docker/blob/master/Dockerfile

RUN apk update
RUN apk add firefox xvfb scrot vips-tools xterm xdotool fluxbox xprop imagemagick bash tesseract-ocr terminus-font ttf-inconsolata ttf-dejavu font-noto font-noto ttf-font-awesome font-noto-extra


ENV SHELL /bin/sh
ENV CC /usr/bin/clang
ENV CXX /usr/bin/clang++
ENV LANG C.UTF-8
ENV PYTHONUNBUFFERED 1
ENV PIP_DISABLE_PIP_VERSION_CHECK 1
ENV PIP_NO_CACHE_DIR 0
ENV TESSDATA_PREFIX /usr/local/share/tessdata
WORKDIR /tmp

RUN apk add --no-cache openssl leptonica openjpeg tiff libpng zlib freetype libgcc libstdc++
# Install development tools
RUN apk add --no-cache --virtual .dev-deps file linux-headers git make automake autoconf libtool pkgconfig clang g++ openssl-dev leptonica-dev openjpeg-dev tiff-dev libpng-dev zlib-dev freetype-dev
# Install Tesseract from master
RUN mkdir /usr/local/share/tessdata
RUN mkdir tesseract

WORKDIR /tmp/tesseract

RUN wget https://github.com/tesseract-ocr/tessdata_fast/raw/main/eng.traineddata -P "$TESSDATA_PREFIX"
RUN git clone --depth 1 https://github.com/tesseract-ocr/tesseract.git .
RUN ./autogen.sh
RUN ./configure
RUN make -j$(nproc)
RUN make install
# Install Python dependencies
RUN pip install -U --no-cache-dir pytesseract
# Cleanup
RUN apk del .dev-deps
RUN rm -f /usr/local/lib/*.a
RUN rm -rf /tmp/* /var/cache/apk/*

WORKDIR /opt