Revert "Bump alpine to 3.23 (#36185)" (#36202)

Unbreak the release pipelines. The issue is caused by
https://gitlab.alpinelinux.org/alpine/aports/-/issues/17775 which
supposedly fixed in 3.23.2 and our build did use that version from what
I see, but maybe it's not fixed yet for `riscv`. We should try this
upgrade again later.

Author: silverwind

Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 # Build stage
-FROM docker.io/library/golang:1.25-alpine3.23 AS build-env
+FROM docker.io/library/golang:1.25-alpine3.22 AS build-env
 
 ARG GOPROXY=direct
 
@@ -39,7 +39,7 @@ RUN chmod 755 /tmp/local/usr/bin/entrypoint \
               /tmp/local/etc/s6/.s6-svscan/* \
               /go/src/code.gitea.io/gitea/gitea
 
-FROM docker.io/library/alpine:3.23 AS gitea
+FROM docker.io/library/alpine:3.22 AS gitea
 
 EXPOSE 22 3000
 

Dockerfile.rootless

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 # Build stage
-FROM docker.io/library/golang:1.25-alpine3.23 AS build-env
+FROM docker.io/library/golang:1.25-alpine3.22 AS build-env
 
 ARG GOPROXY=direct
 
@@ -33,7 +33,7 @@ COPY docker/rootless /tmp/local
 RUN chmod 755 /tmp/local/usr/local/bin/* \
               /go/src/code.gitea.io/gitea/gitea
 
-FROM docker.io/library/alpine:3.23 AS gitea-rootless
+FROM docker.io/library/alpine:3.22 AS gitea-rootless
 
 EXPOSE 2222 3000