Add ability to set shared folder root path

Docs/commands-help/env.md

@@ -28,6 +28,7 @@ Project: Example
 Git branch: main
 RUGBY_KEEP_HASH_YAMLS: NO
 RUGBY_PRINT_MISSING_BINARIES: NO
+RUGBY_SHARED_PARENT_DIR: /Users/swiftyfinch
 ```
 
 You can find the same environment output in the head of each Rugby log file.
@@ -61,3 +62,30 @@ RUGBY_PRINT_MISSING_BINARIES=YES rugby
 ┗━ Moya-framework (a4a42b2)
     ┗━ Alamofire-framework (85d4367)
 ```
+
+### Set a custom path to shared folder root
+
+A path to the root of shared folder (without `.rugby` folder name).
+By default:
+```objc
+RUGBY_SHARED_DIR_ROOT=$HOME rugby
+```
+```sh
+~
+└─ .rugby # shared folder
+   ├─ bin
+   └─ logs
+```
+
+You can set a different one. For example, a current directory:
+```objc
+RUGBY_SHARED_DIR_ROOT=`pwd` rugby
+```
+```sh
+pwd
+└─ .rugby # shared folder combined with local one
+   ├─ backup
+   ├─ bin
+   ├─ build
+   └─ logs
+```

Sources/Rugby/Core/Dependencies/Environment/Environment.swift

@@ -6,14 +6,16 @@ final class Environment {
     // swiftlint:disable identifier_name
     private let RUGBY_KEEP_HASH_YAMLS = "RUGBY_KEEP_HASH_YAMLS"
     private let RUGBY_PRINT_MISSING_BINARIES = "RUGBY_PRINT_MISSING_BINARIES"
+    private let RUGBY_SHARED_DIR_ROOT = "RUGBY_SHARED_DIR_ROOT"
     // swiftlint:enable identifier_name
 }
 
 extension Environment: IEnvironment {
     var all: [String: String] {
         [
             RUGBY_KEEP_HASH_YAMLS: keepHashYamls.yesNo,
-            RUGBY_PRINT_MISSING_BINARIES: printMissingBinaries.yesNo
+            RUGBY_PRINT_MISSING_BINARIES: printMissingBinaries.yesNo,
+            RUGBY_SHARED_DIR_ROOT: sharedFolderParentPath
         ]
     }
 
@@ -24,6 +26,10 @@ extension Environment: IEnvironment {
     var printMissingBinaries: Bool {
         ProcessInfo.processInfo.environment[RUGBY_PRINT_MISSING_BINARIES].isEnabled
     }
+
+    var sharedFolderParentPath: String {
+        ProcessInfo.processInfo.environment[RUGBY_SHARED_DIR_ROOT] ?? Folder.home.path
+    }
 }
 
 private extension String? {

Sources/Rugby/Rugby.swift

@@ -76,7 +76,7 @@ struct Rugby: AsyncParsableCommand {
             logger: Logger(clock: Clock()),
             router: Router(
                 workingDirectory: Folder.current,
-                sharedFolderPath: Folder.home.path
+                sharedFolderPath: env.sharedFolderParentPath
             )
         )
     }

Sources/RugbyFoundation/Core/Common/IEnvironment.swift

@@ -8,4 +8,7 @@ public protocol IEnvironment: AnyObject {
 
     /// A flag to print missing binaries as a tree during an analysing process.
     var printMissingBinaries: Bool { get }
+
+    /// A path to the root of shared folder (without `.rugby` folder name).
+    var sharedFolderParentPath: String { get }
 }