fix Dockerfile to use correct apidoc version for taskdoc
fix Dockerfile to use correct apidoc version for taskdoc

lanchongyizu/on-http,RackHD/on-http,lanchongyizu/on-http,RackHD/on-http,lanchongyizu/on-http,RackHD/on-http,lanchongyizu/on-http,RackHD/on-http