diff --git a/Dockerfile b/Dockerfile
index 236e36935..877ad36ca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,33 +1,46 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
+RUN apt-get update
+# basics 
+RUN apt-get install -y libssl-dev curl libmysqlclient-dev imagemagick  nodejs mysql-server redis-server
+# confirm openssl version
+RUN openssl version
+RUN which openssl
+# install RVM, Ruby, and Bundler
+RUN \curl -L https://get.rvm.io | bash -s stable
+RUN /bin/bash -l -c "rvm requirements"
+# replace ruby mirror url, accelerate install ruby
+RUN sed -i 's/rvm_remote_server_url2/#rvm_remote_server_url2/g' /usr/local/rvm/config/db
+RUN sed -i 's/cache.ruby-lang.org/cache.ruby-china.com/g' /usr/local/rvm/config/db
+# install ruby
+RUN /bin/bash -l -c "rvm install 2.4.5"
+# confirm ruby version
+RUN /bin/bash -l -c "rvm list"
+RUN /bin/bash -l -c "ruby -v"
 
-RUN apt update
-
-RUN apt install -y openssl libssl-dev imagemagick git ruby-dev nodejs libmariadb-dev libmysqlclient-dev shared-mime-info libpq-dev libxml2-dev libxslt-dev
-RUN DEBIAN_FRONTEND="noninteractive" apt -y install tzdata
-RUN ln -s /usr/share/zoneinfo/Asia/Shanghai  /etc/localtime
+#RUN apt-get install -y nodejs
 
 WORKDIR /home/app/gitlink
 
 ADD ./ /home/app/gitlink
 
-RUN gem sources --add https://gems.ruby-china.com/ --remove https://rubygems.org/
+RUN cd /home/app/gitlink
 
-RUN gem update --system
+RUN /bin/bash -l -c 'gem sources --add https://gems.ruby-china.com/ --remove https://rubygems.org/'
 
-RUN gem install bundler
-RUN gem install rake
+RUN /bin/bash -l -c 'gem update --system'
+
+RUN /bin/bash -l -c 'gem install bundler -v 2.3.26'
+RUN /bin/bash -l -c 'gem install rake'
+RUN /bin/bash -l -c 'gem install puma -v 5.6.5'
 
 RUN rm -rf Gemfile.lock
 
-#RUN cp config/configuration.yml.example config/configuration.yml
-#RUN cp config/database.yml.example config/database.yml
-#RUN touch config/redis.yml
-#RUN touch config/elasticsearch.yml
-
-RUN bundle install
-
-EXPOSE 4000
-RUN rails s -p 4000 -b '0.0.0.0'
-
+RUN cp config/configuration.yml.example config/configuration.yml
+RUN cp config/database.yml.example config/database.yml
+RUN touch config/redis.yml
+RUN touch config/elasticsearch.yml
 
+RUN /bin/bash -l -c 'bundle install'
 
+#EXPOSE 4000
+#RUN /bin/bash -l -c 'RAILS_ENV=production puma'
\ No newline at end of file