[yocto] How do I write a yocto/bitbake recipe to replace the default vsftpd.conf file with my own filE?

[Mohammad Nouri]

Hi,
I want to replace the default vsftpd.conf file with my own file!
My bitbake file looks following:

bbexample_1.0.bb
    DESCRIPTION = "Configuration and extra files for TX28"
    LICENSE = "CLOSED"
    LIC_FILES_CHKSUM = ""

    S = "${WORKDIR}"

    SRC_URI += " \
        file://ld.so.conf \
        file://vsftpd.conf \
        file://nginx/nginx.conf \
        file://init.d/myscript.sh"

    inherit allarch

    do_install () {
        install -d ${D}${sysconfdir}
        install -d ${D}${sysconfdir}/nginx
        install -d ${D}${sysconfdir}/init.d
        rm -f ${D}${sysconfdir}/ld.so.conf
        rm -f ${D}${sysconfdir}/vsftpd.conf
        install -m 0755 ${WORKDIR}/ld.so.conf ${D}${sysconfdir}
        install -m 0755 ${WORKDIR}/vsftpd.conf ${D}${sysconfdir}
        install -m 0755 ${WORKDIR}/nginx/nginx.conf ${D}${sysconfdir}/nginx/
        install -m 0755 ${WORKDIR}/init.d/myscript.sh ${D}${sysconfdir}/init.d/
    }

 But, the file could not be replaced!
 What is wrong?