Bump Alpine Linux for Docker image

ChinYikMing · ChinYikMing · commit 33db521a76e6 · 2025-03-20T22:45:27.000+08:00
End of support of Alpine Linux v3.19.x is on 1 Nov 2025. Check: https://alpinelinux.org/releases/
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.19 AS base_gcc
+FROM alpine:3.21 AS base_gcc
 
 RUN apk add --update alpine-sdk git wget sdl2-dev sdl2_mixer-dev
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-FROM alpine:3.19 AS base_gcc`
	`1`	`+FROM alpine:3.21 AS base_gcc`
`2`	`2`
`3`	`3`	`RUN apk add --update alpine-sdk git wget sdl2-dev sdl2_mixer-dev`
`4`	`4`