Install once only

src/freedombone

     if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
         return
     fi
+    if grep -Fxq "install_tor" $COMPLETION_FILE; then
+        return
+    fi
     apt-get -y install tor
+    echo 'install_tor' >> $COMPLETION_FILE
 }
 
 function enable_ssh_via_onion {
     if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
         return
     fi
+    if grep -Fxq "enable_ssh_via_onion" $COMPLETION_FILE; then
+        return
+    fi
     apt-get -y install tor connect-proxy
     if ! grep -q 'Host *.onion' /home/$MY_USERNAME/.ssh/config; then
         if [ ! -d /home/$MY_USERNAME/.ssh ]; then
         echo 'Host *.onion' >> /root/.ssh/config
         echo 'ProxyCommand connect -R remote -5 -S 127.0.0.1:9050 %h %p' >> /root/.ssh/config
     fi
+    echo 'enable_ssh_via_onion' >> $COMPLETION_FILE
 }
 
 function install_editor {