From 1562e9ab707f13e922ea52361fcdb663a14239fb Mon Sep 17 00:00:00 2001
From: Peter Dave Hello <hsu@peterdavehello.org>
Date: Fri, 28 Apr 2017 19:55:19 +0800
Subject: Refactor Dockerfile

1. Use `apk -U --no-cache add` instead of `apk update` + `apk add` +
manually cache clean up.
2. Separate package installation and user, group setup, the combination
to reduce a docker image layer didn't bring benefits here, only makes
Dockerfiles more complex.
---
 Dockerfile | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

(limited to 'Dockerfile')

diff --git a/Dockerfile b/Dockerfile
index 2d47a18ba6..02e22e801d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,8 +3,7 @@ MAINTAINER Thomas Boerger <thomas@webhippie.de>
 
 EXPOSE 22 3000
 
-RUN apk update && \
-  apk add \
+RUN apk -U --no-cache add \
     su-exec \
     ca-certificates \
     sqlite \
@@ -14,10 +13,8 @@ RUN apk update && \
     s6 \
     curl \
     openssh \
-    tzdata && \
-  rm -rf \
-    /var/cache/apk/* && \
-  addgroup \
+    tzdata
+RUN addgroup \
     -S -g 1000 \
     git && \
   adduser \
-- 
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