Merge pull request 'update readme and fix build cache' (#1) from xkm/xdu-dockerfile:main into main

Reviewed-on: #1

.gitea/workflows/build.yaml

@@ -86,5 +86,5 @@ jobs:
           file: ${{ matrix.dockerfile }}
           push: true
           tags: ${{ steps.meta.outputs.tags }}
-          cache-from: type=registry,ref=${{ steps.meta.outputs.cache_repo }}:buildcache
-          cache-to: type=registry,ref=${{ steps.meta.outputs.cache_repo }}:buildcache,mode=max
+          cache-from: type=registry,ref=${{ steps.meta.outputs.cache_repo }}:buildcache${{ matrix.name }}
+          cache-to: type=registry,ref=${{ steps.meta.outputs.cache_repo }}:buildcache${{ matrix.name }},mode=max

README.md

@@ -2,7 +2,19 @@
 
 这是一个西电特化docker镜像库，通常采用你电的mirrors作为软件源
 
+# USE
 
-# bug
+用dockerfile自己构建
+
+或者使用校园网拉取 `reg.xd.xkm.be/xdu/xxx`
+
+现有镜像：
+- debian:trixie -> latest
+- debian:bookworm
+- ubuntu:25.10 -> latest
+- ffmpeg:debian -> latest
+
+
+# BUG
 
 你电的镜像疑似每下载100个必ssl错误一次，需要注意一下