example docker build from dockerfile

Example 1: docker build

docker build -t [tag] .

Example 2: multiple run dockerfile

RUN cd / && \
    git clone https://github.com/ && \
    cd /fileadmin/ && \
    bundle install && \
    rake db:migrate && \
    bundle exec rails runner "eval(File.read 'createTestUser.rb')" && \
    mkdir /pending && \
    mkdir /live && \
    chmod 777 /pending && \
    chmod 777 /live