diff --git a/CHANGES b/CHANGES
index 3e1fc4d..43245f3 100644
--- a/CHANGES
+++ b/CHANGES
@@ -27,3 +27,8 @@
 - Renamed the lock file from `fresh.lock` to `.fresh.lock`.
 - Added option `--lockfile` to override lockfile file name.
 - Implemented the fresh configuration loader.
+
+**0.1.5**
+
+- Bugfix: The lockfile is no longer removed automatically, but only if it was
+  created by the current instance.
diff --git a/README.md b/README.md
index ef2c1fc..0d6e8e3 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,8 @@ a light-weight easy-to-use alternative to more complex toolkits.
 Fresh requires **PHP 8.0** or later.
 
 Download the latest version (or build it yourself) and move it into `/usr/bin`.
-You can grab it at [https://dev.noccylabs.info/noccy/fresh/releases](https://dev.noccylabs.info/noccy/fresh/releases).
+You can grab it at [https://dev.noccylabs.info/noccy/fresh/releases](https://dev.noccylabs.info/noccy/fresh/releases)
+or [https://files.noccylabs.info/fresh](https://files.noccylabs.info/fresh)
 
 ### Building
 
diff --git a/src/Refresher.php b/src/Refresher.php
index 8dc7bc0..50ff4f8 100644
--- a/src/Refresher.php
+++ b/src/Refresher.php
@@ -198,6 +198,8 @@ class Refresher
             $this->setupConfiguration();
             $this->setupHooks();
 
+            $this->lockfile->lock();
+
             $updated = $this->checkUpdates();
 
             // If called with --check, only return exit status
@@ -217,7 +219,7 @@ class Refresher
                 $this->callHooks($updated, 'after');
                 $this->callScript('after');
             }
-                
+            $this->lockfile->release();
             exit(($updated === null) ? 0 : 1);
 
         } catch (\Throwable $t) {
@@ -226,6 +228,7 @@ class Refresher
             if (!$this->options['verbose']) {
                 fprintf(STDERR, $this->log->asString()."\n");
             }
+            $this->lockfile->release();
             exit(2);
 
         }
@@ -253,6 +256,8 @@ class Refresher
         $lockfile = $this->options['lockfile'];
         if (!str_starts_with($lockfile,'/')) $lockfile = $this->path . "/" . $lockfile;
 
+        $this->log->append("Statefile: {$statefile}");
+        $this->log->append("Lockfile: {$lockfile}");
         $this->state = new PersistentState($statefile); // $this->path . "/" . self::$StateFileName);
         $this->lockfile = new Lockfile($lockfile); // $this->path . "/" . self::$LockFileName);
     }
@@ -359,8 +364,6 @@ class Refresher
     private function checkUpdates(): ?array
     {
 
-        $this->lockfile->lock();
-
         $checks = $this->config->getChecks();
         if (count($checks) === 0) {
             fwrite(STDERR, "error: couldn't find any images to check\n");
diff --git a/src/Registry/RegistryV2Client.php b/src/Registry/RegistryV2Client.php
index f35816c..c3f55a1 100644
--- a/src/Registry/RegistryV2Client.php
+++ b/src/Registry/RegistryV2Client.php
@@ -23,7 +23,11 @@ class RegistryV2Client
 
     public function getManifest(string $image, string $tag)
     {
-        $response = $this->client->get("{$image}/manifests/{$tag}");
+        $response = $this->client->get("{$image}/manifests/{$tag}", [
+            'headers' => [
+                //'Accept' => 'application/vnd.docker.distribution.manifest.v2+json',
+            ]
+        ]);
         $body = $response->getBody();
         return json_decode($body);
     }
@@ -32,12 +36,16 @@ class RegistryV2Client
     {
         $manifest = $this->getManifest($image, $tag);
 
-        $fslayers = (array)$manifest->fsLayers;
-        $fshashes = array_map(fn($layer) => $layer->blobSum, $fslayers);
+        //print_r($manifest);
+
+        $fslayers = (array)(($manifest->fsLayers??$manifest->layers)??[]);
+        $fshashes = array_map(fn($layer) => $layer->blobSum??$layer->digest, $fslayers);
         $metahash = hash("sha256", join("|", $fshashes));
 
-        $history = $manifest->history[0];
-        $info = json_decode($history->v1Compatibility);
+        if (isset($manifest->history)) {
+            $history = $manifest->history[0];
+            $info = json_decode($history->v1Compatibility);
+        }
 
         return [
             'image' => $image,
diff --git a/src/State/Lockfile.php b/src/State/Lockfile.php
index 21abcc8..e87d687 100644
--- a/src/State/Lockfile.php
+++ b/src/State/Lockfile.php
@@ -8,6 +8,8 @@ class Lockfile
 
     private int $maxLock = 3600;
 
+    private bool $locked = false;
+
     public function __construct(string $filename)
     {
         $this->filename = $filename;
@@ -22,15 +24,16 @@ class Lockfile
             }
         }
         touch($this->filename);
+        $this->locked = true;
     }
 
     public function release()
     {
-        if (file_exists($this->filename)) {
+        if ($this->locked && file_exists($this->filename)) {
             unlink($this->filename);
         }
-
+        $this->locked = false;
     }
 
 
-}
\ No newline at end of file
+}
diff --git a/tools/build.sh b/tools/build.sh
index 55dc025..b5d2ab1 100755
--- a/tools/build.sh
+++ b/tools/build.sh
@@ -11,9 +11,10 @@ NOW="$(date +"%Y-%m-%d")"
 # create output directory
 mkdir -p dist
 
-# update version.php and build thephar
+# update version.php and build the phar
 echo "<?php define(\"APP_VERSION\", \"${TAG}\"); define(\"BUILD_DATE\", \"${NOW}\");" > src/version.php
 tools/pharlite
+#phpxmake -o "$OUT.phpx" index.php src vendor
 
 # copy raw phar into destination
 cp -v fresh.phar "$OUT.phar"