FIXUP simplify PyMuPDF build

Dockerfile

@@ -7,33 +7,18 @@ ARG H2ORESTART_CHECKSUM=5db816a1e57b510456633f55e693cb5ef3675ef8b35df4f31c90ab9d
 RUN apk --no-cache -U upgrade && \
     apk --no-cache add \
     ghostscript \
-    graphicsmagick \
     libreoffice \
     openjdk8 \
     poppler-utils \
     poppler-data \
     python3 \
     py3-magic \
     tesseract-ocr \
-    font-noto-cjk \
-    py3-pip
+    font-noto-cjk
 
-RUN apk update && apk add --no-cache \
-python3-dev \
-mupdf-dev \
-gcc \
-libc-dev \
-musl-dev \
-jbig2dec \
-openjpeg-dev \
-jpeg-dev \
-harfbuzz-dev \
-swig \
-make \
-g++ &&  ln -s /usr/lib/libjbig2dec.so.0 /usr/lib/libjbig2dec.so && pip install --no-cache-dir pymupdf==1.21.1
-
-# FIXME freeze w/ hashes
-RUN pip install pymupdf
+RUN apk add g++ gcc make python3-dev py3-pip
+RUN pip install --upgrade PyMuPDF # FIXME freeze w/ hashes
+RUN apk del g++ gcc make python3-dev py3-pip
 
 # Download the trained models from the latest GitHub release of Tesseract, and
 # store them under /usr/share/tessdata. This is basically what distro packages