🚧 Install pyenv

Dockerfile-core

@@ -20,6 +20,17 @@ RUN echo "APT::Acquire::Retries \"3\";" > /etc/apt/apt.conf.d/80-retries && \
       xmlstarlet \
 # OCR-D uses ImageMagick for pixel density estimation
       imagemagick \
+# pyenv builds
+# TODO: builder container?
+      libz-dev \
+      libssl-dev \
+      libbz2-dev \
+      liblzma-dev \
+      libncurses-dev \
+      libffi-dev \
+      libreadline-dev \
+      libsqlite3-dev \
+      libmagic-dev \
     && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
@@ -33,13 +44,15 @@ RUN echo "setOverrideLogLevel(os.getenv('LOG_LEVEL', 'INFO'))" >/etc/ocrd_loggin
 # TODO: do not run as root
 # TODO: does just saying "3.7" work as intended?
 ENV HOME=/root
-ENV PYENV_ROOT=$HOME/.pyenv
+ENV PYENV_ROOT=/usr/local/share/pyenv
 ENV PATH=$PYENV_ROOT/shims:$PYENV_ROOT/bin:$PATH
 RUN \
-    git clone --depth=1 https://github.com/yyuu/pyenv.git $HOME/.pyenv && \
+    git clone --depth=1 https://github.com/yyuu/pyenv.git $PYENV_ROOT && \
     pyenv install 3.7 && \
     pyenv global 3.7 && \
-    pyenv rehash
+    pyenv rehash && \
+    pip install -U pip && \
+    pip install setuptools
 
 # Install pip installable-stuff
 RUN ${PIP_INSTALL} \