add install-plugin script,

add project name env

docker/phraseanet/install-plugins

@@ -0,0 +1,50 @@
+#!/usr/bin/env php
+<?php
+function setupStreaming() {
+    // Turn off output buffering
+    ini_set('output_buffering', 'off');
+    // Turn off PHP output compression
+    ini_set('zlib.output_compression', false);
+    // Disable Apache output buffering/compression
+    if (function_exists('apache_setenv')) {
+        apache_setenv('no-gzip', '1');
+        apache_setenv('dont-vary', '1');
+    }
+}
+function runCommand($cmd){
+    echo "+ $cmd\n";
+    system($cmd, $return);
+    if (0 !== $return) {
+        throw new \Exception(sprintf('Error %d: %s', $return, $cmd));
+    }
+}
+setupStreaming();
+
+$plugins = trim(getenv('PHRASEANET_PLUGINS'));
+if (empty($plugins)) {
+    echo "No plugin to install... SKIP\n";
+    exit(0);
+}
+
+foreach (explode(' ', $plugins) as $key => $plugin) {
+    $plugin = trim($plugin);
+    $repo = $plugin;
+    $branch = 'master';
+    if (1 === preg_match('#^(.+)\(([^)]+)\)$#', $plugin, $matches)) {
+        $repo = $matches[1];
+        $branch = $matches[2];
+    }
+
+    $pluginTmpName = 'plugin' . $key;
+    $pluginPath = './plugin' . $key;
+    if (is_dir($pluginPath)) {
+        echo shell_exec(sprintf('rm -rf %s', $pluginPath));
+    }
+
+    echo sprintf("Installing %s (branch: %s)\n", $repo, $branch);
+    runCommand(sprintf('git clone --single-branch --branch %s %s %s', $branch, $repo, $pluginPath));
+
+    runCommand(sprintf('bin/setup plugins:add %s', $pluginPath));
+
+    echo shell_exec(sprintf('rm -rf %s', $pluginPath));
+}