feat: supports mirror usage and add the README back

Author: fritx

README.md

@@ -0,0 +1,19 @@
+# filebrowser/get
+
+https://filebrowser.org/installation
+
+```sh
+# Windows
+iwr -useb https://raw.githubusercontent.com/filebrowser/get/master/get.ps1 | iex
+filebrowser -r /path/to/your/files
+
+# Unix
+curl -fsSL https://raw.githubusercontent.com/filebrowser/get/master/get.sh | bash
+filebrowser -r /path/to/your/files
+
+# If you are in trouble with networking issues,
+# here is an example to work with mirrors:
+export RELEASE_MIRROR='https://gh.api.99988866.xyz/https://github.com'
+curl -fsSL https://raw.gitmirror.com/filebrowser/get/master/get.sh | bash
+filebrowser -r /path/to/your/files
+```

get.ps1

@@ -1,6 +1,6 @@
-#Requires -RunAsAdministrator 
+#Requires -RunAsAdministrator
 #
-#           File Browser Installer Script
+#		   File Browser Installer Script
 #
 #   GitHub: https://github.com/filebrowser/filebrowser
 #   Issues: https://github.com/filebrowser/filebrowser/issues
@@ -9,7 +9,7 @@
 #
 #   	iwr -useb https://raw.githubusercontent.com/filebrowser/get/master/get.ps1 | iex
 #
-#	You should run it as administrator so it can add filemanager to 
+#	You should run it as administrator so it can add filemanager to
 #	the PATH.
 #
 function Install-FileManager {
@@ -24,14 +24,21 @@ function Install-FileManager {
 	}
 
 	$file = "windows-$arch-filebrowser.zip"
-	$url = "https://github.com/filebrowser/filebrowser/releases/download/$tag/$file"
+
+	# Support env.RELEASE_MIRROR such as `https://gh.api.99988866.xyz/https://github.com`
+    $release_base = "https://github.com"
+	if ($env:RELEASE_MIRROR) {
+		$release_base = $env:RELEASE_MIRROR
+	}
+    $url = "$release_base/filebrowser/filebrowser/releases/download/$tag/$file"
+
 	$temp =  New-TemporaryFile
 	$folder = "${env:ProgramFiles}\filebrowser"
 
 	Write-Host "Downloading" $url
-		$WebClient = New-Object System.Net.WebClient 
-		$WebClient.DownloadFile( $url, $temp ) 
-	
+		$WebClient = New-Object System.Net.WebClient
+		$WebClient.DownloadFile( $url, $temp )
+
 	Write-Host "Extracting $temp.zip"
 		Move-Item $temp "$temp.zip"
 		Expand-Archive "$temp.zip" -DestinationPath $temp
@@ -51,13 +58,13 @@ function Install-FileManager {
 		Remove-Item -Force -Recurse "$temp"
 
 	Write-Host "Adding filemanager to the PATH"
-		if ((Get-Command "pandoc.exe" -ErrorAction SilentlyContinue) -eq $null) { 
+		if ((Get-Command "pandoc.exe" -ErrorAction SilentlyContinue) -eq $null) {
 			$path = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment' -Name PATH).Path
 			$path = $path + ";$folder"
 			Set-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment' -Name PATH -Value "$path"
 		}
 
-	Write-Host "filemanager successfully installed!" -ForegroundColor Green 
+	Write-Host "filemanager successfully installed!" -ForegroundColor Green
 }
 
 Install-FileManager

get.sh

@@ -105,10 +105,12 @@ install_filemanager()
 		echo "Aborted, could not find curl or wget"
 		return 7
 	fi
-	
+
 	filemanager_file="${filemanager_os}-$filemanager_arch-filebrowser$filemanager_dl_ext"
 	filemanager_tag="$(${net_getter}  https://api.github.com/repos/filebrowser/filebrowser/releases/latest | grep -o '"tag_name": ".*"' | sed 's/"//g' | sed 's/tag_name: //g')"
-	filemanager_url="https://github.com/filebrowser/filebrowser/releases/download/$filemanager_tag/$filemanager_file"
+
+	# Support env.RELEASE_MIRROR such as `https://gh.api.99988866.xyz/https://github.com`
+	filemanager_url="${RELEASE_MIRROR:-https://github.com}/filebrowser/filebrowser/releases/download/$filemanager_tag/$filemanager_file"
 	echo "$filemanager_url"
 
 	# Use $PREFIX for compatibility with Termux on Android