Set the value of $SSH_AUTH_SOCK instead of the env variable so that the...

Set the value of $SSH_AUTH_SOCK instead of the env variable so that the containers can be started from within the dev container as well

src/Handler.php

@@ -74,10 +74,6 @@ class Handler extends BaseHandler {
       $settingsPath = 'settings/default';
     }
 
-    // Check if SSH auth sockets are supported.
-    $ssh_auth_sock = getenv('SSH_AUTH_SOCK');
-    $options['php']['ssh'] = !empty($ssh_auth_sock);
-
     // Provide all the required files.
     $twig_loader = new \Twig_Loader_Array([]);
     $twig = new \Twig_Environment($twig_loader);
@@ -294,6 +290,14 @@ class Handler extends BaseHandler {
       else {
         $projectRoot = getcwd();
       }
+
+      // Check if SSH auth sockets are supported.
+      $ssh_auth_sock = getenv('SSH_AUTH_SOCK');
+      $options['php']['ssh'] = !empty($ssh_auth_sock);
+      if ($options['php']['ssh']) {
+        $options['php']['ssh_auth_sock'] = $this->getDockerMountSource('/ssh-agent');
+      }
+
       $options['projectroot'] = $projectRoot;
 
       $this->options = $env->replaceEnvironmentVariables($options);

templates/docker-compose.yml.twig

@@ -45,7 +45,7 @@ services:
       - {{ projectroot }}:/var/www/html
       - {{ projectroot }}/drush:/etc/drush
 {% if php.ssh %}
-      - $SSH_AUTH_SOCK:/ssh-agent
+      - {{ php.ssh_auth_sock }}:/ssh-agent
 {% endif %}
 {% if webgrind.enable %}
       - files:/mnt/files