step 4: edit qpkg configuration start-stop script

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

    ######################################################################
    # Define any package specific operations that shall be performed when
    # the package is removed.
    ######################################################################
    #PKG_PRE_REMOVE="{
    #}"
    #
    #PKG_MAIN_REMOVE="{
    #}"
    #
    PKG_POST_REMOVE="{
        CONF=/etc/config/qpkg.conf
        DOCKER_NAME="container-station"
        DOCKER_ROOT=`/sbin/getcfg $DOCKER_NAME Install_Path -f ${CONF}`
        $DOCKER_ROOT/bin/system-docker rm -f myapp
        $DOCKER_ROOT/bin/system-docker rmi nginx:latest
    }"
    #
    #...
    ######################################################################
    # Define any package specific operations that shall be performed when
    # the package is installed.
    ######################################################################
    #pkg_pre_install(){
    #}
    #
    #pkg_install(){
    #}
    #
    pkg_post_install(){
        CONF=/etc/config/qpkg.conf
        QPKG_NAME="nginx"
        DOCKER_NAME="container-station"
        QPKG_ROOT=`/sbin/getcfg $QPKG_NAME Install_Path -f ${CONF}`
        DOCKER_ROOT=`/sbin/getcfg $DOCKER_NAME Install_Path -f ${CONF}`
   
        $DOCKER_ROOT/bin/system-docker load < $QPKG_ROOT/nginx.tar
   
        $DOCKER_ROOT/bin/system-docker run --name myapp -p 9090:80 -v $QPKG_ROOT:/usr/share/nginx/html -d nginx:latest
    }
   

2. edit myapp.sh(start-stop script)

    #!/bin/sh
    CONF=/etc/config/qpkg.conf
    QPKG_NAME="myapp"
    DOCKER_NAME="container-station"
    QPKG_ROOT=`/sbin/getcfg $QPKG_NAME Install_Path -f ${CONF}`
    DOCKER_ROOT=`/sbin/getcfg $DOCKER_NAME Install_Path -f ${CONF}`
    APACHE_ROOT=`/sbin/getcfg SHARE_DEF defWeb -d Qweb -f /etc/config/def_share.info`
    export QNAP_QPKG=$QPKG_NAME
   
    case "$1" in
      start)
        ENABLED=$(/sbin/getcfg $QPKG_NAME Enable -u -d FALSE -f $CONF)
        if [ "$ENABLED" != "TRUE" ]; then
            echo "$QPKG_NAME is disabled."
            exit 1
        fi
        : ADD START ACTIONS HERE
        $DOCKER_ROOT/bin/system-docker start myapp
        ;;
   
      stop)
        : ADD STOP ACTIONS HERE
        $DOCKER_ROOT/bin/system-docker stop myapp
        ;;
   
      restart)
        $0 stop
        $0 start
        ;;
   
      *)
        echo "Usage: $0 {start|stop|restart}"
        exit 1
    esac
   
    exit 0
   

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

    # Name of the packaged application.
    QPKG_NAME="myapp"
    # Name of the display application.
    #QPKG_DISPLAY_NAME=""
    # Version of the packaged application.
    QPKG_VER="0.1"
    # Author or maintainer of the package
    QPKG_AUTHOR="admin"
    # License for the packaged application
    #QPKG_LICENSE=""
    # One-line description of the packaged application
    #QPKG_SUMMARY=""
   
    # Preferred number in start/stop sequence.
    QPKG_RC_NUM="101"
    # Init-script used to control the start and stop of the installed   application.
    QPKG_SERVICE_PROGRAM="myapp.sh"
   
    # Optional 1 is enable. Path of starting/ stopping shall script. (no start/stop on App Center)
    #QPKG_DISABLE_APPCENTER_UI_SERVICE=1
   
    # Specifies any packages required for the current package to operate.
    QPKG_REQUIRE="container-station >= 1.9.3576"
    # Specifies what packages cannot be installed if the current package
    # is to operate properly.
    #QPKG_CONFLICT="Python"
    # Name of configuration file (multiple definitions are allowed).
    #QPKG_CONFIG="myApp.conf"
    #QPKG_CONFIG="/etc/config/myApp.conf"
    # Port number used by service program.
    #QPKG_SERVICE_PORT=""
    # Location of file with running service's PID
    #QPKG_SERVICE_PIDFILE=""
    # Relative path to web interface
    QPKG_WEBUI="/"
    # Port number for the web interface.
    QPKG_WEB_PORT="9090"
    # Port number for the SSL web interface.
    #QPKG_WEB_SSL_PORT=""