Update Dockerfile, working on tLDP/LDP#112

- it seems much more packages are required for our builder
- test build with this docker image went successful

Dockerfile

@@ -8,15 +8,15 @@
 FROM ubuntu:jammy
 
 LABEL maintainer="[email protected]"
-LABEL version="0.2"
+LABEL version="0.3"
 LABEL description="LDP Builder as a Docker image"
 
 ARG DEBIAN_FRONTEND=noninteractive
 
-RUN apt update
+RUN apt-get update
 
 # installing required packages and cleaning up after
-RUN apt -y install texlive-font-utils linuxdoc-tools-text linuxdoc-tools-latex docbook-dsssl docbook-xsl docbook-utils htmldoc htmldoc-common docbook-xsl html2text docbook5-xml docbook-xsl-ns jing asciidoc libxml2-utils python3-stdeb fakeroot python3-all python3-networkx python3-nose fop ldp-docbook-xsl ldp-docbook-dsssl docbook opensp dh-python git python-all rsync fop && rm -rf /var/lib/apt/lists/* && apt clean
+RUN apt-get -y install texlive-font-utils linuxdoc-tools-text linuxdoc-tools-latex docbook-dsssl docbook-xsl docbook-utils htmldoc htmldoc-common docbook-xsl html2text docbook5-xml docbook-xsl-ns jing asciidoc libxml2-utils python3-stdeb fakeroot python3-all python3-networkx python3-nose fop ldp-docbook-xsl ldp-docbook-dsssl docbook opensp dh-python git python-all
 
 # getting our builder soft
 RUN git clone https://github.com/tLDP/python-tldp
@@ -29,15 +29,20 @@ RUN ldptool --dump-cfg
 #################################################################################################
 # STAGE 2/2
 #################################################################################################
-
 FROM ubuntu:jammy
 
 ARG DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get update
 
+RUN apt-get install -y rsync asciidoc docbook docbook-xsl-ns docbook5-xml fop html2text htmldoc jing ldp-docbook-dsssl ldp-docbook-xsl linuxdoc-tools-latex linuxdoc-tools-text python3 python3-networkx python3-nose sgml2x texlive-font-utils xsltproc
+
 COPY --from=0 python-tldp/deb_dist/python3-tldp_*_all.deb .
-RUN apt install ./python3-tldp_*_all.deb --fix-broken -y
+RUN apt-get install ./python3-tldp_*_all.deb --fix-broken -y
+
+RUN apt-get clean
+RUN apt-get autoremove -y
+RUN rm -rf /var/lib/apt/lists/*
 
 # we are done?
 RUN ldptool --dump-cfg