fix: Do not set computername if not explictly provided (#1922)

src/define.sh

@@ -1338,10 +1338,7 @@ validateComputerName() {
 
   local value="$1"
 
-  if [ -z "$value" ]; then
-    value="$APP"
-    HOST="$value"
-  fi
+  [ -z "$value" ] && return 0
 
   if [ "${#value}" -gt 15 ]; then
     error "The HOST variable cannot contain more than 15 characters!"
@@ -1764,13 +1761,14 @@ prepareInstall() {
   local username="${USERNAME:-Docker}"
   local password="${PASSWORD:-admin}"
   local workgroup="${WORKGROUP:-WORKGROUP}"
+
   local sifHost sifUsername sifPassword sifOrganization sifWorkgroup
   local regUsername regPassword
 
   validateLegacyUsername "$username" "$desc" || return 1
   validatePassword "$password" "$desc" || return 1
 
-  sifHost=$(escapeSIFValue "$HOST") || return 1
+  sifHost=$(escapeSIFValue "${HOST:-*}") || return 1
   sifUsername=$(escapeSIFValue "$username") || return 1
   sifPassword=$(escapeSIFValue "$password") || return 1
   sifOrganization=$(escapeSIFValue "$APP for $ENGINE") || return 1

src/install.sh

@@ -1184,9 +1184,9 @@ updateXML() {
 
   local asset="$1"
   local language="$2"
-  local app value culture region keyboard edition key
+  local app value culture region keyboard edition
   local user user_xml auth_user admin pass pw
-  local domain qualifier host workgroup
+  local domain qualifier host workgroup key
 
   [ -z "$WIDTH" ] && WIDTH="1280"
   [ -z "$HEIGHT" ] && HEIGHT="720"
@@ -1199,10 +1199,8 @@ updateXML() {
   validatePassword "$PASSWORD" || return 1
 
   app=$(escapeXMLSed "$APP for $ENGINE") || return 1
-  host=$(escapeXMLSed "$HOST") || return 1
 
   sed -i "s|>Windows for Docker<|>$app<|g" "$asset" || return 1
-  sed -i -E "s|<ComputerName>[^<]*</ComputerName>|<ComputerName>$host</ComputerName>|g" "$asset" || return 1
   sed -i -E "s|<VerticalResolution>[^<]*</VerticalResolution>|<VerticalResolution>$HEIGHT</VerticalResolution>|g" "$asset" || return 1
   sed -i -E "s|<HorizontalResolution>[^<]*</HorizontalResolution>|<HorizontalResolution>$WIDTH</HorizontalResolution>|g" "$asset" || return 1
 
@@ -1231,6 +1229,11 @@ updateXML() {
     sed -i "s|<InputLocale>0409:00000409</InputLocale>|<InputLocale>$value</InputLocale>|g" "$asset" || return 1
   fi
 
+  if [ -n "$HOST" ]; then
+    host=$(escapeXMLSed "$HOST") || return 1
+    sed -i -E "s|<ComputerName>[^<]*</ComputerName>|<ComputerName>$host</ComputerName>|g" "$asset" || return 1
+  fi
+
   domain="$DOMAIN"
   workgroup="$WORKGROUP"