tuto3: add sos-dhcp script in case of VM not booting correctly

tuto3.yml

@@ -31,7 +31,7 @@ onboot:
     # Network: external
   - name: dhcpcd
     image: linuxkit/dhcpcd:v0.7
-    command: ["/sbin/dhcpcd", "--nobackground", "-f", "/dhcpcd.conf", "-1"]
+    command: ["/sbin/dhcpcd", "--nobackground", "-f", "/dhcpcd.conf", "-1", "eth0"]
     net: new
     runtime:
       interfaces:
@@ -461,6 +461,12 @@ files:
 #      done &
 #    mode: "0555"
 
+  - path: /usr/sbin/sos-dhcp
+    contents: |
+      #!/bin/sh
+      nsenter -t $(pgrep dhcpcd) -a dhcpcd
+    mode: "0755"
+
   - path: /usr/sbin/join-p0m
     contents: |
       [ -f "/var/lib/adlin/wireguard/adlin.token" ] && echo "A token is already defined. You'll erase it it you continue."