Add DOCKER_IMAGE_BUILDER_HOST_CONFIG_PATH env var.

Author: tosih

ansible/group_vars/alpha-api-base.yml

@@ -20,6 +20,8 @@ volume_mounts:
 api_base_container_envs:
   - name: DOCKER_IMAGE_BUILDER_CACHE
     value: "/home/anandkumarpatel/cache"
+  - name: "DOCKER_IMAGE_BUILDER_HOST_CONFIG_PATH"
+    value: "/root/.docker/config.json"
   - name: VALID_REDIR_TLDS
     value: "{{ domain }},runnablecloud.com"
   - name: FULL_API_DOMAIN