anchor.diff:  
   # gogs reads USER or USERNAME to determine the run user
   ENV USER gogs
  -USER gogs
   
   # shell expansion does not work, g.e. like /opt/gogs/{custom,log}
   # create the mountable folders before you declare them with the VOLUME statement, otherwise they will be created automatically as root user
  
positive.code:         git\
          sqlite3\
          bsdtar\
          unzip &&\
      rm -rf /var/lib/apt/lists/*
  
  # create gogs user
  
negative.code: 
  WORKDIR /opt/gogs
  
  CMD service ssh start && sudo -u gogs /opt/gogs/gogs web
  