From fc0475d4f1ad76efb3a39fa33d606dab2f73fb49 Mon Sep 17 00:00:00 2001
From: sacha <23283108+sacha-l@users.noreply.github.com>
Date: Wed, 17 Jun 2026 10:07:24 +0200
Subject: [PATCH] fix(docker): retry apk add on transient Alpine mirror
 failures

A flaky Alpine CDN made 'apk add python3 make g++' fail with exit 15,
breaking a Railway deploy (and stranding an env-var change). Retry up to
5x with backoff so a transient mirror blip can't fail the build.
---
 server/Dockerfile | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/server/Dockerfile b/server/Dockerfile
index 8d5cf81..bd79798 100644
--- a/server/Dockerfile
+++ b/server/Dockerfile
@@ -1,8 +1,12 @@
 # Use Node.js LTS version
 FROM node:20-alpine
 
-# Install build dependencies for native modules
-RUN apk add --no-cache python3 make g++
+# Install build dependencies for native modules. Retry on transient Alpine
+# mirror/network failures (apk exit 15) so a flaky CDN can't break a deploy.
+RUN for i in 1 2 3 4 5; do \
+      apk add --no-cache python3 make g++ && break; \
+      echo "apk add failed (attempt $i), retrying in 5s..."; sleep 5; \
+    done
 
 # Set working directory
 WORKDIR /app