Write doc of seagull dockerfile
Write doc of seagull dockerfile

ljb-2000/seagull,tobegit3hub/seagull,tobegit3hub/seagull,Cepave/seagull,AlphaStaxLLC/seagull,sdgdsffdsfff/seagull,AlphaStaxLLC/seagull,YankunLi/seagull,tobegit3hub/seagull,BWITS/seagull,xiongjungit/seagull,xiongjungit/seagull,sdgdsffdsfff/seagull,YankunLi/seagull,sdgdsffdsfff/seagull,ycaihua/seagull,ljb-2000/seagull,BWITS/seagull,YankunLi/seagull,ljb-2000/seagull,Cepave/seagull,Cepave/seagull,ycaihua/seagull,ycaihua/seagull,ycaihua/seagull,BWITS/seagull,AlphaStaxLLC/seagull,xiongjungit/seagull,sdgdsffdsfff/seagull,AlphaStaxLLC/seagull,Cepave/seagull,BWITS/seagull,YankunLi/seagull,tobegit3hub/seagull,xiongjungit/seagull