diff --git a/index.md b/index.md
index 083fd44..cb9c9fe 100644
--- a/index.md
+++ b/index.md
@@ -17,6 +17,7 @@ Setup [Drone CI autoscaler](https://autoscale.drone.io/).
   * [droneci_autoscaler_agent_version](#droneci_autoscaler_agent_version)
   * [droneci_autoscaler_agent_volumes](#droneci_autoscaler_agent_volumes)
   * [droneci_autoscaler_db_type](#droneci_autoscaler_db_type)
+  * [droneci_autoscaler_docker_auth_config](#droneci_autoscaler_docker_auth_config)
   * [droneci_autoscaler_exposed_ports](#droneci_autoscaler_exposed_ports)
   * [droneci_autoscaler_gc_enabled](#droneci_autoscaler_gc_enabled)
   * [droneci_autoscaler_image](#droneci_autoscaler_image)
@@ -33,6 +34,7 @@ Setup [Drone CI autoscaler](https://autoscale.drone.io/).
   * [droneci_autoscaler_pool_min](#droneci_autoscaler_pool_min)
   * [droneci_autoscaler_pool_ttl](#droneci_autoscaler_pool_ttl)
   * [droneci_autoscaler_restart_policy](#droneci_autoscaler_restart_policy)
+  * [droneci_autoscaler_runner_env_file](#droneci_autoscaler_runner_env_file)
   * [droneci_autoscaler_runner_privileged](#droneci_autoscaler_runner_privileged)
   * [droneci_autoscaler_runner_volumes](#droneci_autoscaler_runner_volumes)
   * [droneci_autoscaler_server_host](#droneci_autoscaler_server_host)
@@ -125,6 +127,23 @@ Database type to use (default sqlite). All other DB variable will ony be used it
 droneci_autoscaler_db_type: sqlite
 ```
 
+### droneci_autoscaler_docker_auth_config
+
+Docker registries auth config file (config.json).
+
+#### Default value
+
+```YAML
+droneci_autoscaler_docker_auth_config: |
+  {
+    "auths": {
+      "https://index.docker.io/v1/": {
+        "auth": "abc...xy="
+      }
+    }
+  }
+```
+
 ### droneci_autoscaler_exposed_ports
 
 #### Default value
@@ -175,6 +194,14 @@ droneci_autoscaler_instances:
     agent_architecture: amd64
     sshkey: "dummy"
     api_host: "drone-amd64.example.com"
+    docker_auth_config: |
+      {
+        "auths": {
+          "https://index.docker.io/v1/": {
+            "auth": "abc...xy="
+          }
+        }
+      }
     provider_config:
       - name: DRONE_HETZNERCLOUD_DATACENTER
         value: fsn1-dc14
@@ -311,6 +338,14 @@ droneci_autoscaler_pool_ttl: 50m
 droneci_autoscaler_restart_policy: always
 ```
 
+### droneci_autoscaler_runner_env_file
+
+#### Default value
+
+```YAML
+droneci_autoscaler_runner_env_file: /etc/drone.conf
+```
+
 ### droneci_autoscaler_runner_privileged
 
 #### Default value