--- Dockerfile.orig     2020-08-19 20:00:38.850664964 +0800
+++ Dockerfile  2020-08-19 20:01:54.729742797 +0800
@@ -3,6 +3,10 @@
 # Use bash for the shell
 SHELL ["bash", "-c"]

+RUN apt update
+RUN apt install -y apt-transport-https ca-certificates
+COPY tsinghua.list /etc/apt/sources.list
+
 # Install Node v12 (LTS)
 ENV NODE_VER="12.16.3"
 RUN ARCH= && \
@@ -20,7 +24,7 @@
        apt update && \
        apt -y install wget python && \
        cd ~ && \
-       wget https://nodejs.org/download/release/v$NODE_VER/node-v$NODE_VER-linux-$ARCH.tar.gz && \
+       wget https://mirrors.tuna.tsinghua.edu.cn/nodejs-release/v$NODE_VER/node-v$NODE_VER-linux-$ARCH.tar.gz && \
        tar xf node-v$NODE_VER-linux-$ARCH.tar.gz && \
        rm node-v$NODE_VER-linux-$ARCH.tar.gz && \
        mv node-v$NODE_VER-linux-$ARCH /opt/node
@@ -47,7 +51,7 @@
                bison libyaml-dev libgdbm-dev libreadline-dev \
                libncurses5-dev libffi-dev zlib1g-dev libssl-dev && \
        cd ~ && \
-       wget https://cache.ruby-lang.org/pub/ruby/${RUBY_VER%.*}/ruby-$RUBY_VER.tar.gz && \
+       wget https://cache.ruby-china.com/pub/ruby/${RUBY_VER%.*}/ruby-$RUBY_VER.tar.gz && \
        tar xf ruby-$RUBY_VER.tar.gz && \
        cd ruby-$RUBY_VER && \
        ./configure --prefix=/opt/ruby \
@@ -60,6 +64,9 @@

 ENV PATH="${PATH}:/opt/ruby/bin:/opt/node/bin"

+RUN npm config set registry https://registry.npm.taobao.org
+RUN bundle config mirror.https://rubygems.org https://gems.ruby-china.com
+
 RUN npm install -g yarn && \
        gem install bundler && \
        apt update && \
@@ -68,6 +75,8 @@

 COPY Gemfile* package.json yarn.lock /opt/mastodon/

+RUN yarn config set registry https://registry.npm.taobao.org/
+
 RUN cd /opt/mastodon && \
   bundle config set deployment 'true' && \
   bundle config set without 'development test' && \