From 280ee968915b23008dcf7601074e0d7a5bbd1c30 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Sun, 3 May 2020 13:42:31 +0200
Subject: Decrease Docker image size

* use intermediate image for file setup
* Set version via build-arg instead of from .git
---
 Dockerfile | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 56 insertions(+), 12 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 608bbbf..b208156 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,29 +1,73 @@
+# docker build -t vrr-fakedisplay:latest --build-arg=vrrf_version=$(git describe --dirty) .
+
+FROM debian:buster-slim AS files
+
+ARG vrrf_version=git
+
+COPY Build.PL cpanfile index.pl /app/
+COPY lib/ /app/lib/
+COPY public/ /app/public/
+COPY share/ /app/share/
+COPY templates/ /app/templates/
+
+WORKDIR /app
+
+RUN ln -sf ../ext-templates/imprint.html.ep templates/imprint.html.ep \
+	&& ln -sf ../ext-templates/privacy.html.ep templates/privacy.html.ep
+
+RUN find lib -name '*.pm' -or -name '*.PL' | xargs sed -i \
+	-e "s/VERSION *= *.*;/VERSION = '${vrrf_version}';/"
+
+RUN sed -i -e "s/VERSION *= *.*;/VERSION = '${vrrf_version}';/" \
+	index.pl
+
+
 FROM perl:5.30-slim
 
 ARG DEBIAN_FRONTEND=noninteractive
+ARG APT_LISTCHANGES_FRONTEND=none
+
+COPY --from=files /app/ /app/
 
-COPY . /app
 WORKDIR /app
 
-RUN rm -rf public \
-	&& apt-get update \
-	&& apt-get -y --no-install-recommends install ca-certificates curl gcc git libc6-dev libdb5.3 libdb5.3-dev libgd3 libgd-dev libssl1.1 libssl-dev libxml2 libxml2-dev make zlib1g-dev \
+RUN apt-get update \
+	&& apt-get -y --no-install-recommends install \
+		ca-certificates \
+		curl \
+		gcc \
+		libc6-dev \
+		libdb5.3 \
+		libdb5.3-dev \
+		libgd3 \
+		libgd-dev \
+		libssl1.1 \
+		libssl-dev \
+		libxml2 \
+		libxml2-dev \
+		make \
+		zlib1g-dev \
 	&& cpanm -n --no-man-pages --installdeps . \
+	&& mv public / \
 	&& perl Build.PL \
 	&& perl Build \
 	&& perl Build manifest \
 	&& perl Build install \
-	&& rm -rf ~/.cpanm \
-	&& apt-get -y purge curl gcc libc6-dev libdb5.3-dev libgd-dev libssl-dev libxml2-dev make zlib1g-dev \
+	&& rm -rf ~/.cpanm _build blib MANIFEST* META* MYMETA* \
+	&& mv /public . \
+	&& apt-get -y purge \
+		curl \
+		gcc \
+		libc6-dev \
+		libdb5.3-dev -\
+		libgd-dev \
+		libssl-dev \
+		libxml2-dev \
+		make \
+		zlib1g-dev \
 	&& apt-get -y autoremove \
-	&& apt-get -y clean \
 	&& rm -rf /var/cache/apt/* /var/lib/apt/lists/*
 
-RUN ln -sf ../ext-templates/imprint.html.ep templates/imprint.html.ep \
-	&& ln -sf ../ext-templates/privacy.html.ep templates/privacy.html.ep
-
-COPY public /app/public/
-
 EXPOSE 8091
 
 CMD ["hypnotoad", "-f", "index.pl"]
-- 
cgit v1.2.3