new: dev: [Dockerfile] added =libxslt= and =xpath= commands

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

Dockerfile

@@ -3,6 +3,8 @@ FROM python:2-alpine3.7 as common
 CMD ["/bin/sh"]
 
 RUN apk --no-cache --update add git bash yaml sed lsof findutils
+RUN apk --no-cache --update add libxslt
+
 
 FROM common as builder
 
@@ -83,6 +85,11 @@ RUN cd /tmp && \
     cd pyyaml-4.1 && \
     PYTHONPATH=/usr/lib/python2.7/site-packages python setup.py --with-libyaml install
 
+## needed by 'xpath' script from kal-scripts for parsing html output
+RUN apk add libxslt-dev && \
+    pip install lxml==4.5.2 html5lib==1.1 webencodings==0.5.1 && \
+    wget "https://git.0k.io/kal-scripts.git/plain/src/bin/xpath?h=0k/dev/master&id=e04a1b7942cb39ff2515c7f666abd33bf621b119" -O /usr/local/bin/xpath && \
+    chmod +x /usr/local/bin/xpath
 
 
 FROM common