bugfix: fix build image error.

images_build/server_dns/Dockerfile

@@ -1,9 +1,10 @@
-FROM alpine:edge
-RUN set -eux && sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories
+FROM alpine
+RUN set -eux && sed -i 's/dl-cdn.alpinelinux.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apk/repositories
 LABEL maintainer="TSG"
 ADD webproc_linux_amd64.gz /tmp/
 # fetch dnsmasq and webproc binary
 RUN apk update \
+	&& apk upgrade alpine-keys \
 	&& apk --no-cache add dnsmasq \
 	&& apk add --no-cache --virtual .build-deps curl \
 	&& gzip -cd /tmp/webproc_linux_amd64.gz > /usr/local/bin/webproc \

images_build/server_web/Dockerfile

@@ -21,7 +21,7 @@ RUN sed -i s@/archive.ubuntu.com/@/mirrors.163.com/@g /etc/apt/sources.list \
     iputils-ping \
     faketime \
     && gem update --system 3.1.6 \
-    && gem install jekyll
+    && gem install jekyll --version 4.2.2
 
 # Install badssl.com
 ADD . badssl.com