reference

Dockerfile doc: https://docs.docker.com/engine/reference/builder/

package_routines doc: https://edhongcy.gitbooks.io/qdk-qpkg-development-kit/content/package-specific-installation-functions.html

qpkg.cfg doc: https://edhongcy.gitbooks.io/qdk-qpkg-development-kit/content/qpkg-configuration-file.html

QDK GitHub: https://github.com/qnap-dev/QDK

myapp Github: https://github.com/edhongcy/myapp