Uses dynamic values in code snippets in getting-started.md

Uses dynamic values for tap0 and vmlinux version

Signed-off-by: Markus Ziller <web+github@markusziller.de>

Author: markusz

docs/getting-started.md

@@ -182,10 +182,10 @@ HOST_IFACE="eth0"
 sudo iptables -t nat -D POSTROUTING -o "$HOST_IFACE" -j MASQUERADE || true
 sudo iptables -D FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT \
     || true
-sudo iptables -D FORWARD -i tap0 -o "$HOST_IFACE" -j ACCEPT || true
+sudo iptables -D FORWARD -i "$TAP_DEV" -o "$HOST_IFACE" -j ACCEPT || true
 sudo iptables -t nat -A POSTROUTING -o "$HOST_IFACE" -j MASQUERADE
 sudo iptables -I FORWARD 1 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-sudo iptables -I FORWARD 1 -i tap0 -o "$HOST_IFACE" -j ACCEPT
+sudo iptables -I FORWARD 1 -i "$TAP_DEV" -o "$HOST_IFACE" -j ACCEPT
 
 API_SOCKET="/tmp/firecracker.socket"
 LOGFILE="./firecracker.log"
@@ -203,7 +203,7 @@ sudo curl -X PUT --unix-socket "${API_SOCKET}" \
     }" \
     "http://localhost/logger"
 
-KERNEL="./vmlinux-5.10.210"
+KERNEL="./$(ls vmlinux* | tail -1)"
 KERNEL_BOOT_ARGS="console=ttyS0 reboot=k panic=1 pci=off"
 
 ARCH=$(uname -m)