Docker: Install wkhtmltopdf from vendor to enable inclusion of images (#83)

* wkhtmltopdf from vendor rather than ubuntu upstream

* removing xvfb

* fixed dependency issue for wkhtmltopdf

* Fix formatting, add --no-progress to wget command

Dockerfile

@@ -10,18 +10,17 @@ WORKDIR /resume
 CMD ["/bin/bash"]
 
 RUN apt-get update \
-	&& apt-get install -qqy --no-install-recommends\
+	&& apt-get install -qqy --no-install-recommends \
         # This is for enabling the program to be run with watch
         procps \
-        wkhtmltopdf \
         # Required to run PDF generation
-        xvfb \
-        xauth \
+        wget apt-utils libjpeg62-turbo libxrender1 xfonts-75dpi xfonts-base fontconfig libxext6 \
+        && apt-get autoremove \
 	&& rm -rf /var/lib/apt/lists/*
 
-# Wrap pdf creation in a xvfb-run to enable headless pdf creation in the container
-RUN echo "#!/bin/bash\nxvfb-run $(which wkhtmltopdf) \"\$@\"" >> /usr/local/bin/wkhtmltopdf \
-    && chmod +x /usr/local/bin/wkhtmltopdf
+RUN cd /root \
+    && wget https://downloads.wkhtmltopdf.org/0.12/0.12.5/wkhtmltox_0.12.5-1.stretch_amd64.deb --no-verbose \
+    && dpkg -i wkhtmltox_0.12.5-1.stretch_amd64.deb
 
 # Enables continously calling a command and piping the output to STDOUT, viewable via docker logs
 RUN printf '#!/bin/bash\nwhile sleep 1; do\n    "$@"\ndone' >> /usr/bin/watch-docker \