diff --git a/CHANGELOG.md b/CHANGELOG.md
index c257fc4..19476b0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # CHANGELOG
 
+## [1.1.0]
+- change: added additional functional usage
+
 ## [1.0.8]
 - fix: git - directory check for deletion
 
diff --git a/bin/downloadSources.php b/bin/downloadSources.php
deleted file mode 100644
index df6c645..0000000
--- a/bin/downloadSources.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-require_once __DIR__ . '/../vendor/autoload.php';
-
-use FluxEco\SourceDownloader\Adapters\Api\SourceDownloaderApi;
-
-$sourceListFile = null;
-$volumePath = null;
-$gitGetFullClone = null;
-
-if (count($argv) === 4) {
-    $sourceListFile = __DIR__ . '/' . $argv[1];
-    $volumePath = $argv[2];
-    $gitGetFullClone = (bool)$argv[3];
-}
-
-$api = SourceDownloaderApi::new($sourceListFile, $volumePath, $gitGetFullClone);
-$api->downloadSources();
\ No newline at end of file
diff --git a/composer.json b/composer.json
index 52f6350..373ce4c 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
   "name": "flux-eco/source-downloader",
   "description": "Component for flux-capacitor apps developed by fluxlabs",
-  "version": "1.0.8",
+  "version": "1.1.0",
   "type": "flux-eco",
   "keywords": [
     "flux-eco",
@@ -23,15 +23,25 @@
   },
   "require": {
     "flux-eco/shell-executor": ">=0.0.1",
+    "flux-eco/dot-env": ">=0.0.1",
     "php": ">=7.4",
     "ext-curl": "*",
     "ext-json": "*",
     "ext-yaml": "*"
   },
   "autoload": {
+    "files": [
+      "fn/downloadSources.php",
+      "fn/getEnvSourceDownloaderGitFullClone.php",
+      "fn/getEnvSourceDownloaderSourceListFilePath.php",
+      "fn/getEnvSourceDownloaderVolumePath.php"
+    ],
     "psr-4": {
       "FluxEco\\SourceDownloader\\": [
         "src/"
+      ],
+      "fluxy\\": [
+        "fn/"
       ]
     }
   },
diff --git a/composer.lock b/composer.lock
index 2f0e254..e709f7d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,31 +4,85 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "544ed68328e2b30f1aa7914d4890be6b",
+    "content-hash": "89f03f561e1279b608ed79a2820af7b1",
     "packages": [
+        {
+            "name": "flux-eco/dot-env",
+            "version": "1.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/flux-eco/dot-env.git",
+                "reference": "018e9cc0f6ccadbbe764abc987d86e22d1058f6f"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/flux-eco/dot-env/zipball/018e9cc0f6ccadbbe764abc987d86e22d1058f6f",
+                "reference": "018e9cc0f6ccadbbe764abc987d86e22d1058f6f",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.4"
+            },
+            "type": "flux-app",
+            "autoload": {
+                "files": [
+                    "fn/loadDotEnv.php"
+                ],
+                "psr-4": {
+                    "fluxy\\": [
+                        "fn/"
+                    ],
+                    "FluxEco\\DotEnv\\": [
+                        "src/"
+                    ]
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "GPL-3.0-only"
+            ],
+            "authors": [
+                {
+                    "name": "fluxlabs ag",
+                    "email": "support@fluxlabs.ch",
+                    "homepage": "https://fluxlabs.ch",
+                    "role": "Developer"
+                }
+            ],
+            "description": "Loads .env-Files",
+            "homepage": "https://fluxlabs.ch",
+            "keywords": [
+                "dot-env",
+                "flux-eco",
+                "fluxlabs"
+            ],
+            "support": {
+                "email": "support@fluxlabs.ch",
+                "source": "https://github.com/flux-eco/dot-env/tree/v1.1.0"
+            },
+            "time": "2022-04-03T03:56:56+00:00"
+        },
         {
             "name": "flux-eco/shell-executor",
-            "version": "0.0.1",
+            "version": "0.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/flux-eco/shell-executor.git",
-                "reference": "bf1dd67ecd242864449d42cb92a55a5c20357a98"
+                "reference": "bb67de623f80e14cee0cca902eca57eeaf9c9539"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/flux-eco/shell-executor/zipball/bf1dd67ecd242864449d42cb92a55a5c20357a98",
-                "reference": "bf1dd67ecd242864449d42cb92a55a5c20357a98",
+                "url": "https://api.github.com/repos/flux-eco/shell-executor/zipball/bb67de623f80e14cee0cca902eca57eeaf9c9539",
+                "reference": "bb67de623f80e14cee0cca902eca57eeaf9c9539",
                 "shasum": ""
             },
             "require": {
-                "composer-runtime-api": ">=2.1",
                 "ext-curl": "*",
                 "ext-json": "*",
                 "ext-yaml": "*",
-                "php": ">=8.0"
+                "php": ">=7.4"
             },
             "require-dev": {
-                "composer/composer": ">=2.0",
                 "swoole/ide-helper": ">=4.6"
             },
             "type": "flux-app",
@@ -51,19 +105,19 @@
                     "role": "Developer"
                 }
             ],
-            "description": "Component for flux-capacitor apps developed by fluxlabs",
+            "description": "Component for executing shell commands",
             "homepage": "https://fluxlabs.ch",
             "keywords": [
-                "flux-capacitor",
-                "flux-ecosystem",
-                "fluxlabs ag"
+                "flux-eco",
+                "fluxlabs",
+                "shell-executor"
             ],
             "support": {
                 "email": "support@fluxlabs.ch",
                 "issues": "https://github.com/flux-eco/shell-executor/issues",
-                "source": "https://github.com/flux-eco/shell-executor/tree/v0.0.1"
+                "source": "https://github.com/flux-eco/shell-executor/tree/v0.0.2"
             },
-            "time": "2022-03-28T03:02:50+00:00"
+            "time": "2022-04-01T02:41:15+00:00"
         }
     ],
     "packages-dev": [],
diff --git a/examples/.env b/examples/.env
new file mode 100644
index 0000000..3bfd379
--- /dev/null
+++ b/examples/.env
@@ -0,0 +1,3 @@
+SOURCE_DOWNLOADER_SOURCE_LIST_FILE_PATH=sourceList.yaml
+SOURCE_DOWNLOADER_VOLUME_PATH=/tmp
+SOURCE_DOWNLOADER_GIT_FULL_CLONE=0
\ No newline at end of file
diff --git a/examples/downloadSources.php b/examples/downloadSources.php
new file mode 100644
index 0000000..feb1a7a
--- /dev/null
+++ b/examples/downloadSources.php
@@ -0,0 +1,15 @@
+<?php
+
+require_once __DIR__ . '/../vendor/autoload.php';
+
+use FluxEco\SourceDownloader;
+use FluxEco\DotEnv;
+
+DotEnv\Api::new()->load(__DIR__);
+
+$sourceListFile = getenv(SourceDownloader\Env::SOURCE_LIST_FILE_PATH);
+$volumePath = getenv(SourceDownloader\Env::VOLUME_PATH);
+$gitGetFullClone = getenv(SourceDownloader\Env::GIT_FULL_CLONE);
+
+$api = SourceDownloader\Api::new($gitGetFullClone);
+$api->downloadSources($sourceListFile, $volumePath);
\ No newline at end of file
diff --git a/examples/downloadSourcesFunctional.php b/examples/downloadSourcesFunctional.php
new file mode 100644
index 0000000..57072b4
--- /dev/null
+++ b/examples/downloadSourcesFunctional.php
@@ -0,0 +1,11 @@
+<?php
+
+require_once __DIR__ . '/../vendor/autoload.php';
+
+fluxy\loadDotEnv(__DIR__);
+
+fluxy\downloadSources(
+    fluxy\getEnvSourceDownloaderSourceListFilePath(),
+    fluxy\getEnvSourceDownloaderVolumePath(),
+    fluxy\getEnvSourceDownloaderGitFullClone()
+);
\ No newline at end of file
diff --git a/examples/ilias/run.sh b/examples/ilias/run.sh
deleted file mode 100644
index 9e2bfee..0000000
--- a/examples/ilias/run.sh
+++ /dev/null
@@ -1 +0,0 @@
-php ../../bin/downloadSources.php '../examples/ilias/sourceList.yaml' '/tmp' 0
\ No newline at end of file
diff --git a/examples/ilias/sourceList.yaml b/examples/sourceList.yaml
similarity index 100%
rename from examples/ilias/sourceList.yaml
rename to examples/sourceList.yaml
diff --git a/fn/downloadSources.php b/fn/downloadSources.php
new file mode 100644
index 0000000..bea07ec
--- /dev/null
+++ b/fn/downloadSources.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace fluxy;
+
+use FluxEco\SourceDownloader\Api;
+
+function downloadSources(string $sourceListFile = null, ?string $volumePath = null, bool $gitGetFullClone = true)
+{
+    $api = Api::new($gitGetFullClone);
+    $api->downloadSources($sourceListFile, $volumePath);
+}
\ No newline at end of file
diff --git a/fn/getEnvSourceDownloaderGitFullClone.php b/fn/getEnvSourceDownloaderGitFullClone.php
new file mode 100644
index 0000000..b81ab65
--- /dev/null
+++ b/fn/getEnvSourceDownloaderGitFullClone.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace fluxy;
+
+use FluxEco\SourceDownloader;
+
+function getEnvSourceDownloaderGitFullClone() : bool
+{
+    return (bool) getenv(SourceDownloader\Env::GIT_FULL_CLONE);
+}
\ No newline at end of file
diff --git a/fn/getEnvSourceDownloaderSourceListFilePath.php b/fn/getEnvSourceDownloaderSourceListFilePath.php
new file mode 100644
index 0000000..1398c4f
--- /dev/null
+++ b/fn/getEnvSourceDownloaderSourceListFilePath.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace fluxy;
+
+use FluxEco\SourceDownloader;
+
+function getEnvSourceDownloaderSourceListFilePath()
+{
+    return getenv(SourceDownloader\Env::SOURCE_LIST_FILE_PATH);
+}
\ No newline at end of file
diff --git a/fn/getEnvSourceDownloaderVolumePath.php b/fn/getEnvSourceDownloaderVolumePath.php
new file mode 100644
index 0000000..eca9df1
--- /dev/null
+++ b/fn/getEnvSourceDownloaderVolumePath.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace fluxy;
+
+use FluxEco\SourceDownloader;
+
+function getEnvSourceDownloaderVolumePath(): string
+{
+    return getenv(SourceDownloader\Env::VOLUME_PATH);
+}
\ No newline at end of file
diff --git a/src/Adapters/Api/SourceDownloaderApi.php b/src/Adapters/Api/SourceDownloaderApi.php
deleted file mode 100644
index ea8898a..0000000
--- a/src/Adapters/Api/SourceDownloaderApi.php
+++ /dev/null
@@ -1,25 +0,0 @@
-<?php
-
-namespace FluxEco\SourceDownloader\Adapters\Api;
-
-use FluxEco\SourceDownloader\{Adapters, Core\Ports};
-
-class SourceDownloaderApi
-{
-    private Ports\Service $service;
-
-    private function __construct(Ports\Service $service)
-    {
-        $this->service = $service;
-    }
-
-    public static function new(?string $sourceListFile = null, ?string $volumePath = null, ?bool $gitGetFullClone = null) : self
-    {
-        $apiGatewayService = Ports\Service::new(Adapters\Configs\Outbounds::new($sourceListFile, $volumePath, $gitGetFullClone));
-        return new self($apiGatewayService);
-    }
-
-    public function downloadSources() {
-        $this->service->downloadSources();
-    }
-}
\ No newline at end of file
diff --git a/src/Adapters/Configs/Outbounds.php b/src/Adapters/Configs/Outbounds.php
index 34f88ab..7a7db42 100644
--- a/src/Adapters/Configs/Outbounds.php
+++ b/src/Adapters/Configs/Outbounds.php
@@ -6,33 +6,15 @@
 
 class Outbounds implements Ports\Configs\Outbounds
 {
-    private string $sourceListFile;
-    private string $volumePath;
     private bool $gitGetFullClone;
 
-    private function __construct(string $sourceListFile, string $volumePath, bool $gitGetFullClone)
+    private function __construct(bool $gitGetFullClone)
     {
-        $this->sourceListFile = $sourceListFile;
-        $this->volumePath = $volumePath;
         $this->gitGetFullClone = $gitGetFullClone;
     }
 
-    public static function new(
-        ?string $sourceListFile = null,
-        ?string $volumePath = null,
-        ?bool $gitGetFullClone = null
-    ) : self {
-        if (is_null($sourceListFile) === true) {
-            $sourceListFile = getenv(Env::SOURCE_LIST_FILE);
-        }
-        if (is_null($volumePath) === true) {
-            $volumePath = getenv(Env::VOLUME_PATH);
-        }
-        if (is_null($gitGetFullClone) === true) {
-            $gitGetFullClone = getenv(Env::GIT_FULL_CLONE);
-        }
-
-        return new self($sourceListFile, $volumePath, $gitGetFullClone);
+    public static function new(bool $gitGetFullClone) : self {
+        return new self($gitGetFullClone);
     }
 
     public function getShellExecutorClient() : Ports\ShellExecutor\ShellExecutorClient
@@ -45,12 +27,12 @@ public function getGitFullClone() : bool
         return $this->gitGetFullClone;
     }
 
-    public function getSourceList() : array
+    public function getSourceList(string $sourceListFile, ?string $volumePath = null) : array
     {
-        $sources = yaml_parse(file_get_contents($this->sourceListFile));
+        $sources = yaml_parse(file_get_contents($sourceListFile));
         $transformedSources = [];
         foreach ($sources as $source) {
-            $source['directoryPath'] = $this->volumePath . $source['directoryPath'];
+            $source['directoryPath'] = $volumePath . $source['directoryPath'];
             $transformedSources[] = $source;
         }
         return $transformedSources;
diff --git a/src/Api.php b/src/Api.php
new file mode 100644
index 0000000..3775dbf
--- /dev/null
+++ b/src/Api.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace FluxEco\SourceDownloader;
+
+use FluxEco\SourceDownloader\{Adapters, Core\Ports};
+
+class Api
+{
+    private Ports\Service $service;
+
+    private function __construct(Ports\Service $service)
+    {
+        $this->service = $service;
+    }
+
+    public static function new(bool $gitGetFullClone = true) : self
+    {
+        $apiGatewayService = Ports\Service::new(Adapters\Configs\Outbounds::new($gitGetFullClone));
+        return new self($apiGatewayService);
+    }
+
+    public function downloadSources(string $sourceListFile = null, ?string $volumePath = null) {
+        $this->service->downloadSources($sourceListFile, $volumePath);
+    }
+}
\ No newline at end of file
diff --git a/src/Core/Ports/Configs/Outbounds.php b/src/Core/Ports/Configs/Outbounds.php
index bea963e..eb1767f 100644
--- a/src/Core/Ports/Configs/Outbounds.php
+++ b/src/Core/Ports/Configs/Outbounds.php
@@ -8,5 +8,5 @@ interface Outbounds
 {
     public function getShellExecutorClient() : Ports\ShellExecutor\ShellExecutorClient;
     public function getGitFullClone() : bool;
-    public function getSourceList() : array;
+    public function getSourceList(string $sourceListFile, ?string $volumePath = null) : array;
 }
\ No newline at end of file
diff --git a/src/Core/Ports/Service.php b/src/Core/Ports/Service.php
index 3644977..4ed3458 100644
--- a/src/Core/Ports/Service.php
+++ b/src/Core/Ports/Service.php
@@ -18,9 +18,9 @@ public static function new(Configs\Outbounds $outbounds) : self
         return new self($outbounds);
     }
 
-    public function downloadSources()
+    public function downloadSources(string $sourceListFile = null, ?string $volumePath = null)
     {
-        $sourceList = $this->outbounds->getSourceList();
+        $sourceList = $this->outbounds->getSourceList($sourceListFile, $volumePath);
 
         foreach ($sourceList as $source) {
             $process = Processes\DownloadProcess::new($this->outbounds);
diff --git a/src/Adapters/Configs/Env.php b/src/Env.php
similarity index 54%
rename from src/Adapters/Configs/Env.php
rename to src/Env.php
index 585134a..6e3aad6 100644
--- a/src/Adapters/Configs/Env.php
+++ b/src/Env.php
@@ -1,10 +1,10 @@
 <?php
 
-namespace FluxEco\SourceDownloader\Adapters\Configs;
+namespace FluxEco\SourceDownloader;
 
 class Env
 {
-    public const GIT_FULL_CLONE = 'SOURCE_DOWNLOADER_GIT_FULL_CLONE';
-    public const SOURCE_LIST_FILE = 'SOURCE_DOWNLOADER_SOURCE_LIST_FILE';
+    public const SOURCE_LIST_FILE_PATH = 'SOURCE_DOWNLOADER_SOURCE_LIST_FILE_PATH';
     public const VOLUME_PATH = 'SOURCE_DOWNLOADER_VOLUME_PATH';
+    public const GIT_FULL_CLONE = 'SOURCE_DOWNLOADER_GIT_FULL_CLONE';
 }
\ No newline at end of file