Fix ext-network handling

.gitignore

@@ -2,6 +2,7 @@
 docker-compose.yml
 ext-network.yml
 ext-network.yml.original
+ext-network.yml.bak
 .eth/*
 !.eth/README.md
 !.eth/validator_keys/.empty

ethd

@@ -199,6 +199,10 @@ prep_conffiles() {
   if [ ! -f "ssv-config/config.yaml" ]; then
     ${__as_owner} cp ssv-config/config-sample.yaml ssv-config/config.yaml
   fi
+# Create ext-network.yml if it doesn't exist
+  if [ ! -f "ext-network.yml" ]; then
+    ${__as_owner} cp ext-network.yml.sample ext-network.yml
+  fi
 }
 
 
@@ -1203,9 +1207,14 @@ update() {
   fi
 
   if [ -z "${ETHDSECUNDO-}" ]; then
-    # Do not track changes to ext-network.yml
     set +e
-    ${__as_owner} git update-index --assume-unchanged ext-network.yml
+    __fix_extnetwork=0
+    if [ ! -f ext-network.yml.sample ]; then
+      __fix_extnetwork=1
+      ${__as_owner} git update-index --no-assume-unchanged ext-network.yml
+      ${__as_owner} cp ext-network.yml ext-network.yml.bak
+      ${__as_owner} git restore ext-network.yml
+    fi
     ${__as_owner} git config pull.rebase false
     var="ETH_DOCKER_TAG"
     value=$(sed -n -e "s/^${var}=\(.*\)/\1/p" "${ENV_FILE}" || true)
@@ -1216,6 +1225,9 @@ update() {
         git checkout main
       fi
       ${__as_owner} git pull origin main
+      if [ "${__fix_extnetwork}" -eq 1 ]; then
+        ${__as_owner} cp ext-network.yml.bak ext-network.yml
+      fi
     else
       export ETHDPINNED="${value}"
       ${__as_owner} git fetch --tags