set cdImage to "destkop/cdImage.jpg"

theUsername = "foo"
thePassword = "bar"
serverPath to "https://webserver.com/repo/img/"
mount volume theServer as user name theUsername with password thePassword
delay 1

tell application "Finder"
    duplicate file cdImage to folder (theServer & "/")
end tell

tell application "Finder"
    duplicate (quoted form of cdImage) to (quoted form of theServer)
end tell

do shell script "cp -a " & (quoted form of cdImage) & " " & (quoted form of (theServer & "/"))

tell application "System Events" to duplicate file cdImage to theServer