update Dockerfile to use Debian buster

Signed-off-by: Matthew Peveler <matt.peveler@gmail.com>

1 files changed, 11 insertions, 10 deletions

diff --git a/Dockerfile b/Dockerfile
index 2963e50..bab15f9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,13 +3,14 @@
 # This defaults to 3.6 if nothing is given.
 ARG PYTHON_VERSION=3.6
 
-# These images are based off Debian Stretch (slim) using https://hub.docker.com/_/python/ as the "base"
-FROM python:${PYTHON_VERSION}-stretch
+# These images are based off Debian Buster (slim) using https://hub.docker.com/_/python/ as the "base"
+FROM python:${PYTHON_VERSION}-slim-buster
 
-# Install asciidoc dependencies
-# install the necessary stuff for asciidoc now that python has been built
-RUN echo "deb http://ftp.debian.org/debian stretch-backports main" >> /etc/apt/sources.list && apt-get update && \
-    apt-get install -y --no-install-recommends \
+# Install the dependencies that asciidoc needs. The mkdir line is needed as something pulls in java jdk and it
+# will fail if that folder does not already exist because...java.
+RUN mkdir /usr/share/man/man1/ \
+    && echo "deb http://ftp.debian.org/debian stretch-backports main" >> /etc/apt/sources.list && apt-get update \
+    && apt-get install -y --no-install-recommends \
         autoconf \
         dblatex \
         docbook-xml \
@@ -22,16 +23,16 @@ RUN echo "deb http://ftp.debian.org/debian stretch-backports main" >> /etc/apt/s
         highlight \
         imagemagick \
         libxml2-utils \
+        lilypond \
         make \
         python3 \
         source-highlight \
         time \
         texlive-latex-base \
         unzip \
-        xsltproc \
-        && \
-    apt-get -t stretch-backports install -y --no-install-recommends lilypond && \
-    apt-get clean && rm -rf /var/lib/apt/lists/*
+    && apt-get clean && rm -rf /var/lib/apt/lists/*
 
 COPY . "/srv/asciidoc"
 WORKDIR "/srv/asciidoc"
+
+CMD "/bin/bash"