Avoid manual reboot for network parameters to take effect

scripts/install_deps.sh

@@ -59,6 +59,9 @@ do
             echo "net.ipv4.tcp_keepalive_time = 240" | sudo tee -a /etc/sysctl.conf
             echo "net.ipv4.tcp_keepalive_intvl = 65" | sudo tee -a /etc/sysctl.conf
             echo "net.ipv4.tcp_keepalive_probes = 5" | sudo tee -a /etc/sysctl.conf
+
+            # Reload /etc/sysctl.conf (so you don't have to reboot to effect the above changes)
+            sudo sysctl -p /etc/sysctl.conf
             ;;
         *)
             echo "Unknown command-line flag" $flag

scripts/provision.sh

@@ -56,6 +56,8 @@ fi
 mkdir -p ~/work
 sudo mount ${DISK_DEVICE} ~/work
 sudo chown $(whoami):$(whoami) ~/work
+# If not using a pre-installed image, this line will fail, as /opt won't exist.
+# It doesn't harm anything, so I didn't bother wrapping it in the appropriate "if" statement.
 cp -r /opt/* ~/work
 
 mkdir -p ~/work/scratch