From 095884d8f97b1715c726b4c4be5281c95670b79e Mon Sep 17 00:00:00 2001
From: Peter Dave Hello <hsu@peterdavehello.org>
Date: Tue, 26 Nov 2024 01:35:12 +0800
Subject: [PATCH] Reduce Docker image size by improving apk commands

Replace redundant apk flags `-U` and `--update` with `--no-cache` to
prevent package index caching. This change unifies all apk package
commands for better maintainability and smaller image size.
---
 Dockerfile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index dcaf27cc32..8184d833a7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM python:3.12.6-alpine3.20 AS builder
 
-RUN apk --update add \
+RUN apk --no-cache add \
     build-base \
     libxml2-dev \
     libxslt-dev \
@@ -14,11 +14,11 @@ RUN pip install --prefix /install --no-warn-script-location --no-cache-dir -r re
 
 FROM python:3.12.6-alpine3.20
 
-RUN apk add --update --no-cache tor curl openrc libstdc++
+RUN apk add --no-cache tor curl openrc libstdc++
 # git go //for obfs4proxy
 # libcurl4-openssl-dev
 
-RUN apk -U upgrade
+RUN apk --no-cache upgrade
 
 # uncomment to build obfs4proxy
 # RUN git clone https://gitlab.com/yawning/obfs4.git