fix(install): Fix Junction creation during installation inside containers

CHANGELOG.md

@@ -13,6 +13,7 @@
 - **scoop-prefix:** Fix typo that breaks global installed apps ([#4795](https://github.com/ScoopInstaller/Scoop/issues/4795))
 - **update:** Skip logs starting with `(chore)` ([#4800](https://github.com/ScoopInstaller/Scoop/issues/4800))
 - **scoop-download:** Add failure check ([#4822](https://github.com/ScoopInstaller/Scoop/pull/4822))
+- **install:** Fix issue with installation inside containers ([#4837](https://github.com/ScoopInstaller/Scoop/pull/4837))
 
 ### Code Refactoring
 

lib/install.ps1

@@ -924,7 +924,7 @@ function link_current($versiondir) {
         Remove-Item $currentdir -Recurse -Force -ErrorAction Stop
     }
 
-    New-Item -Path $currentdir -ItemType Junction -Value $versiondir | Out-Null
+    New-DirectoryJunction $currentdir $versiondir | Out-Null
     attrib $currentdir +R /L
     return $currentdir
 }
@@ -1175,7 +1175,7 @@ function persist_data($manifest, $original_dir, $persist_dir) {
             # create link
             if (is_directory $target) {
                 # target is a directory, create junction
-                New-Item -Path $source -ItemType Junction -Value $target | Out-Null
+                New-DirectoryJunction $source $target | Out-Null
                 attrib $source +R /L
             } else {
                 # target is a file, create hard link
@@ -1238,3 +1238,14 @@ function test_running_process($app, $global) {
         return $false
     }
 }
+
+# wrapper function to create junction links
+# Required to handle docker/for-win#12240
+function New-DirectoryJunction($source, $target) {
+    # test if this script is being executed inside a docker container
+    if (Get-Service -Name cexecsvc -ErrorAction SilentlyContinue) {
+        cmd.exe /d /c "mklink /j `"$source`" `"$target`""
+    } else {
+        New-Item -Path $source -ItemType Junction -Value $target
+    }
+}

lib/psmodules.ps1

@@ -26,7 +26,7 @@ function install_psmodule($manifest, $dir, $global) {
         Remove-Item -Path $linkfrom -Force -ErrorAction SilentlyContinue
     }
 
-    New-Item -Path $linkfrom -ItemType Junction -Value $dir | Out-Null
+    New-DirectoryJunction $linkfrom $dir | Out-Null
 }
 
 function uninstall_psmodule($manifest, $dir, $global) {