walle-web v1.2.0 a patch support docker deploy，use dir map way.

v1.2.0.patch

diff --git a/components/Folder.php b/components/Folder.php
index 2a84f32..1e757c4 100644
--- a/components/Folder.php
+++ b/components/Folder.php
@@ -267,9 +267,13 @@ class Folder extends Ansible {
         $currentTmp = sprintf('%s/%s/current-%s.tmp', rtrim($this->getConfig()->release_library, '/'), $project, $project);
         // 遇到回滚，则使用回滚的版本version
         $linkFrom = Project::getReleaseVersionDir($version);
-        $cmd[] = sprintf('ln -sfn %s %s', $linkFrom, $currentTmp);
-        $cmd[] = sprintf('chown -h %s %s', $user, $currentTmp);
-        $cmd[] = sprintf('mv -fT %s %s', $currentTmp, $this->getConfig()->release_to);
+
+       $webroot = $this->getConfig()->release_to;
+       $webroots = explode(DIRECTORY_SEPARATOR, $webroot);
+       $alias = array_pop($webroots);
+       $htdocs = implode(DIRECTORY_SEPARATOR, $webroots);
+       $relative = self::find_relative_path($htdocs, $linkFrom);
+       $cmd[] = sprintf('cd %s && ln -sfn %s %s', $htdocs, $relative, $alias);
 
         return join(' && ', $cmd);
     }
@@ -339,5 +343,41 @@ class Folder extends Ansible {
         return $this->runLocalCommand($command);
     }
 
+	/**
+	 *
+	 * Find the relative file system path between two file system paths
+	 *
+	 * @param  string  $frompath  Path to start from
+	 * @param  string  $topath    Path we want to end up in
+	 *
+	 * @return string             Path leading from $frompath to $topath
+	 */
+	public static function find_relative_path($frompath, $topath) {
+		$from = explode(DIRECTORY_SEPARATOR, $frompath); // Folders/File
+		$to = explode(DIRECTORY_SEPARATOR, $topath); // Folders/File
+		$relpath = '';
+
+		$i = 0;
+		// Find how far the path is the same
+		while (isset($from[$i]) && isset($to[$i])) {
+			if ($from[$i] != $to[$i]) break;
+			$i++;
+		}
+		$j = count($from) - 1;
+		// Add '..' until the path is the same
+		while ($i <= $j) {
+			if (!empty($from[$j])) $relpath .= '..' . DIRECTORY_SEPARATOR;
+			$j--;
+		}
+		// Go to folder from where it starts differing
+		while (isset($to[$i])) {
+			if (!empty($to[$i])) $relpath .= $to[$i] . DIRECTORY_SEPARATOR;
+			$i++;
+		}
+
+		// Strip last separator
+		return substr($relpath, 0, -1);
+	}
+
 }