Include ssh port in setup

src/freedombone-image-customise

@@ -333,6 +333,7 @@ if [ -f ~/.initial_setup ]; then
 fi
 EOF
 
+    echo 'SSH_PORT=${SSH_PORT}' >> $rootdir/root/.bashrc
     echo '# initial setup of the system' >> $rootdir/root/.bashrc
     echo 'if [ -f ~/.initial_setup ]; then' >> $rootdir/root/.bashrc
     echo '    if [ -f ~/login.txt ]; then' >> $rootdir/root/.bashrc