diff --git a/Dockerfile b/Dockerfile
index c5a30d682..6fd322161 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,8 +3,8 @@ FROM ubuntu:22.04
 ENV DEBIAN_FRONTEND noninteractive
 ENV LC_CTYPE=C.UTF-8
 
-RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
-    apt-get update && \
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
+RUN apt-get update && \
     apt-get install -y \
         build-essential \
         git \
diff --git a/challenge/Dockerfile_amd64 b/challenge/Dockerfile_amd64
index 48aed3cfd..a9fe607d1 100644
--- a/challenge/Dockerfile_amd64
+++ b/challenge/Dockerfile_amd64
@@ -43,9 +43,9 @@ RUN <<EOF
     apt-get clean && rm -rf /var/lib/apt/lists/*
 EOF
 
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
-    sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
     apt-get update && xargs apt-get install --no-install-recommends -yqq <<EOF && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
         ca-certificates
@@ -63,9 +63,9 @@ RUN rm -f /usr/lib/python3.*/EXTERNALLY-MANAGED
 
 FROM essentials as builder-essentials
 
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
-    sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
     apt-get update && xargs apt-get install --no-install-recommends -yqq <<EOF && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
         build-essential
@@ -75,9 +75,9 @@ EOF
 
 FROM builder-essentials as builder
 
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
-    sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
     apt-get update && xargs apt-get install --no-install-recommends -yqq <<EOF && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
         autoconf
@@ -356,10 +356,10 @@ FROM essentials as builder-desktop-base-no
 FROM essentials as builder-desktop-base-yes
 
 ARG UBUNTU_VERSION=20.04
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
     [ "${UBUNTU_VERSION}" == "20.04" ] && TGR=common || TGR=tools; \
-    sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
     apt-get update && xargs apt-get install --no-install-recommends -yqq <<EOF && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
         novnc
@@ -378,9 +378,9 @@ FROM builder-desktop-base-${INSTALL_DESKTOP_BASE} as builder-desktop-base
 FROM builder-desktop-base-no as builder-desktop-xfce-no
 FROM builder-desktop-base-yes as builder-desktop-xfce-yes
 
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
-    sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
     apt-get update && xargs apt-get install -yqq <<EOF && \
     apt-get -y remove --purge at-spi2-core tumbler gvfs-* && \
     apt-get -y autoremove && \
@@ -465,9 +465,9 @@ FROM builder-desktop-binja-free-${INSTALL_BINJA_FREE} as builder-desktop-binja-f
 FROM essentials as builder-tools-apt-no
 FROM essentials as builder-tools-apt-yes
 
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
-    sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
     apt-get update && xargs apt-get install --no-install-recommends -yqq <<EOF && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
         arping
diff --git a/challenge/Dockerfile_arm64 b/challenge/Dockerfile_arm64
index 462cf37b7..afbd683f2 100644
--- a/challenge/Dockerfile_arm64
+++ b/challenge/Dockerfile_arm64
@@ -41,9 +41,9 @@ RUN <<EOF
     apt-get clean && rm -rf /var/lib/apt/lists/*
 EOF
 
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
-    sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
     apt-get update && xargs apt-get install --no-install-recommends -yqq <<EOF && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
         ca-certificates
@@ -61,9 +61,9 @@ RUN rm -f /usr/lib/python3.*/EXTERNALLY-MANAGED
 
 FROM essentials as builder-essentials
 
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
-    sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
     apt-get update && xargs apt-get install --no-install-recommends -yqq <<EOF && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
         build-essential
@@ -73,9 +73,9 @@ EOF
 
 FROM builder-essentials as builder
 
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
-    sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
     apt-get update && xargs apt-get install --no-install-recommends -yqq <<EOF && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
         autoconf
@@ -342,10 +342,10 @@ FROM essentials as builder-desktop-base-no
 FROM essentials as builder-desktop-base-yes
 
 ARG UBUNTU_VERSION=20.04
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
     [ "${UBUNTU_VERSION}" == "20.04" ] && TGR=common || TGR=tools; \
-    sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
     apt-get update && xargs apt-get install --no-install-recommends -yqq <<EOF && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
         novnc
@@ -364,9 +364,9 @@ FROM builder-desktop-base-${INSTALL_DESKTOP_BASE} as builder-desktop-base
 FROM builder-desktop-base-no as builder-desktop-xfce-no
 FROM builder-desktop-base-yes as builder-desktop-xfce-yes
 
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
-    sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
     apt-get update && xargs apt-get install -yqq <<EOF && \
     apt-get -y remove --purge at-spi2-core tumbler gvfs-* && \
     apt-get -y autoremove && \
@@ -412,9 +412,9 @@ FROM builder-desktop-ghidra-${INSTALL_GHIDRA} as builder-desktop-ghidra
 FROM essentials as builder-tools-apt-no
 FROM essentials as builder-tools-apt-yes
 
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
-    sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
     apt-get update && xargs apt-get install --no-install-recommends -yqq <<EOF && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
         arping
diff --git a/ctfd/Dockerfile b/ctfd/Dockerfile
index 969ea03b9..1e8bf6eb6 100644
--- a/ctfd/Dockerfile
+++ b/ctfd/Dockerfile
@@ -1,8 +1,8 @@
 FROM python:3.9-slim-buster as build
 WORKDIR /opt/CTFd
 
-RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
-    apt-get update \
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
+RUN apt-get update \
     && apt-get install -y --no-install-recommends \
         build-essential \
         libffi-dev \
@@ -25,8 +25,8 @@ COPY . /opt/CTFd
 FROM python:3.9-slim-buster as release
 WORKDIR /opt/CTFd
 
-RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list \
-    apt-get update \
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
+RUN apt-get update \
     && apt-get install -y --no-install-recommends \
         libffi6 \
         libssl1.1 \
diff --git a/windows/Dockerfile b/windows/Dockerfile
index b8cc6c95c..391f844e1 100644
--- a/windows/Dockerfile
+++ b/windows/Dockerfile
@@ -1,5 +1,6 @@
 FROM ubuntu:20.04 AS full
 
+RUN sed -i.bak 's|https\?://archive.ubuntu.com|https://mirrors.hust.edu.cn|g' /etc/apt/sources.list
 RUN echo 'APT::Install-Recommends 0;' >> /etc/apt/apt.conf.d/01norecommends \
   && echo 'APT::Install-Suggests 0;' >> /etc/apt/apt.conf.d/01norecommends \
   && apt-get update \