Adjust Dockerfile for 7.0.0

.docker/Dockerfile

@@ -3,28 +3,44 @@
 FROM      ubuntu:18.04
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
+  build-essential autoconf automake libtool \
+  leptonica \
+  libexempi3 \
   ocrmypdf \
-  unpaper \
+  pngquant \
+  python3-pip \
+  python3-venv \
+  tesseract-ocr \
+  tesseract-ocr-chi-sim \
+  tesseract-ocr-deu \
   tesseract-ocr-eng \
   tesseract-ocr-fra \
-  tesseract-ocr-deu \
-  tesseract-ocr-spa \
   tesseract-ocr-por \
-  tesseract-ocr-chi-sim \
-  python3-venv \
-  python3-pip
+  tesseract-ocr-spa \
+  unpaper \
+  wget
 
 ENV LANG=C.UTF-8
 
+# Compile and install jbig2
+RUN wget -q https://github.com/agl/jbig2enc/archive/0.29.tar.gz -O - | \
+      tar xz -C jbig2 --strip-components=1 \
+  && cd jbig2 \
+  && ./autogen.sh && ./configure && make install \
+  && cd .. \
+  && rm -rf jbig2
+
+RUN apt-get uninstall autoconf automake libtool
+
 RUN python3 -m venv --system-site-packages /appenv
 
 # This installs the latest binary wheel instead of the code in the current
 # folder. Installing from source will fail, apparently because cffi needs
-# build-essentials (gcc) to do a source installation 
+# build-essentials (gcc) to do a source installation
 # (i.e. "pip install ."). It's unclear to me why this is the case.
 RUN . /appenv/bin/activate; \
   pip install --upgrade pip \
-  && pip install ocrmypdf[fitz]
+  && pip install ocrmypdf
 
 # Now copy the application in, mainly to get the test suite.
 # Do this now to make the best use of Docker cache.