Merge pull request #19 from canonical/fix/latest-lts-first-install

Change first run to install latest .NET SDK LTS version

src/Dotnet.Installer.Console/Commands/InstallCommand.cs

@@ -54,6 +54,9 @@ private async Task Handle(string component, string version)
                     "latest" => _manifestService.Remote
                         .Where(c => c.Name.Equals(component, StringComparison.CurrentCultureIgnoreCase))
                         .MaxBy(c => c.MajorVersion),
+                    "lts" => _manifestService.Remote
+                        .Where(c => c.IsLts && c.Name.Equals(component, StringComparison.CurrentCultureIgnoreCase))
+                        .MaxBy(c => c.MajorVersion),
                     _ => _manifestService.MatchVersion(component, version)
                 };
 

src/Dotnet.Installer.Console/Scripts/dotnet-launcher.sh

@@ -49,13 +49,12 @@ if [[ $# -gt 0 && $1 = "installer" ]]; then
 else
     # Check for installed .NET components
     manifest_path="$SNAP_COMMON/snap/manifest.json"
-    manifest_data=$(< "$manifest_path")
 
-    if [[ $(echo "$manifest_data" | "$SNAP"/usr/bin/jq 'length') -eq 0 ]]; then
+    if [[ $("$SNAP"/usr/bin/jq 'length' "$manifest_path") -eq 0 ]]; then
         echo "Looks like you don't yet have a .NET SDK or Runtime installed."
         echo "I am downloading and installing the latest SDK for you to use. It should only be a few moments."
 
-        command_to_execute=("$SNAP/Dotnet.Installer.Console" "install" "sdk" "latest")
+        command_to_execute=("$SNAP/Dotnet.Installer.Console" "install" "sdk" "lts")
 
         if ! run_elevated "0" "${command_to_execute[@]}"; then
             echo "Could not install the latest .NET SDK. Please check your credentials or run this command with sudo."