From: Łukasz Langa <lukasz@langa.pl>
Date: Tue, 17 Mar 2020 10:33:57 +0000 (+0100)
Subject: Compress RUN statements into one to avoid layer proliferation
X-Git-Url: https://git.madduck.net/etc/vim.git/commitdiff_plain/e44e0a65981eca8c3066a41657a4949af04b0e2d

Compress RUN statements into one to avoid layer proliferation

Thanks for the suggestion, @imomaliev.
---

diff --git a/gallery/Dockerfile b/gallery/Dockerfile
index b7d0ac1..7a18b7e 100644
--- a/gallery/Dockerfile
+++ b/gallery/Dockerfile
@@ -1,11 +1,11 @@
 FROM python:3.8.2-slim
 
-RUN apt-get update
-RUN apt-get upgrade -y
-RUN apt-get install git apt-utils -y
-
-RUN git config --global user.email "black@psf.github.com"
-RUN git config --global user.name "Gallery/Black"
+# note: a single RUN to avoid too many image layers being produced
+RUN apt-get update \
+ && apt-get upgrade -y \
+ && apt-get install git apt-utils -y \
+ && git config --global user.email "black@psf.github.com" \
+ && git config --global user.name "Gallery/Black"
 
 COPY gallery.py /
 ENTRYPOINT ["python", "/gallery.py"]