doxygen plugin

steps:
  - name: "Build documentation with doxygen"
    description: "Build documentation with doxygen"
    docker: "intmain/microci_doxygen"
    plugin:
      name: doxygen
   doxyfile: ./Doxyfile
#      doxyfile: ./Doxyfile
   output_dir: doxygen
#      output_dir: doxygen
   html:
#      html:
     header: header.html    # Optional
#        header: header.html    # Optional
     footer: footer.html    # Optional
#        footer: footer.html    # Optional
     stylesheet: style.css  # Optional
#        stylesheet: style.css  # Optional