From 788682398a8c249cdc8abfb6245aff4b52ede8dc Mon Sep 17 00:00:00 2001
From: Noah <dingkuiqing@126.com>
Date: Sat, 12 Sep 2026 18:39:59 +0000
Subject: [PATCH] =?UTF-8?q?fix(docker):=20FFmpeg=20=E5=9B=BA=E5=AE=9A?=
 =?UTF-8?q?=E5=88=B0=20BtbN=20=E6=9C=88=E6=9C=AB=20autobuild=20(#1691)?=
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autobuild-2026-08-29 已被上游删除，Docker 构建 404。BtbN 只长期保留每月最后一天的构建，改为固定 autobuild-2026-08-31-13-27 并更新 SHA-256。
---
 Dockerfile | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index a6e9a71..b7de0b3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -81,16 +81,18 @@ RUN set -eux; \
 	\
 	arch="$(dpkg --print-architecture)"; arch="${arch##*-}"; \
 	# 固定 FFmpeg 到确定版本并校验 SHA-256：
-	# latest 是滚动 tag，资产每日重建，既不可复现也无法防篡改
-	url='https://github.com/BtbN/FFmpeg-Builds/releases/download/autobuild-2026-08-29-13-12/ffmpeg-n8.1.2-50-g1a748fe2cd-'; \
+	# latest 是滚动 tag，资产每日重建，既不可复现也无法防篡改。
+	# 只能固定到「每月最后一天」的 autobuild：BtbN 长期保留月末构建，
+	# 其余每日构建约两周后删除，固定到它们会让镜像构建 404。
+	url='https://github.com/BtbN/FFmpeg-Builds/releases/download/autobuild-2026-08-31-13-27/ffmpeg-n8.1.2-50-g1a748fe2cd-'; \
 	case "$arch" in \
 		'amd64') \
 			url="${url}linux64-gpl-8.1.tar.xz"; \
-			sha256='be243f2520d6e7e92c82b015ed72a3f5b57c7970801c0d51f031457122653c76'; \
+			sha256='c733b4b2951e5957e15505f788b2c65a7a41b6da4b289e295852cc38079b4d2b'; \
 		;; \
 		'arm64') \
 			url="${url}linuxarm64-gpl-8.1.tar.xz"; \
-			sha256='0df9277976f71f36b31a4de9f6657a1fbbf32ce2273594c18f19b92fbbbde1ce'; \
+			sha256='ae5da4f51b9052390f414005f8ab26c1eed1268f327cce7cb79aa076b29bd66e'; \
 		;; \
 		*) \
 			useApt=true; \