First step would be to get current version of code from BitBucket.
After that you can download and install required tools.
In Publish.cmd check location of Visual Studio (COMPILE_TOOL variable) and
location of Sign Tool (SIGN_TOOL variable).
In case you have certificate that you want to use for signing, update it also
(SIGN_HASH variable). In case you don't have a certificate, it is OK, script
will just skip signing executables.
After this you can start script and it will compile project and make its setup.
Executables will be in Binaries directory and setup will be in Releases.