docs: update docker info

README.md

@@ -1,4 +1,5 @@
-#  docker-volume-backup-s3
+# docker-volume-backup-s3
+
 [![Build Status](https://drone.adamkoro.com/api/badges/adamkoro/docker-volume-backup-s3/status.svg)](https://drone.adamkoro.com/adamkoro/docker-volume-backup-s3)
 ![Docker Image Size (latest by date)](https://img.shields.io/docker/image-size/adamkoro/docker-volume-backup)
 ![Docker Pulls](https://img.shields.io/docker/pulls/adamkoro/docker-volume-backup)
@@ -12,6 +13,16 @@ Create tar.gz file from docker volume and upload it to S3.
 
 This image is only for backup. It doesn't have any restore functionality.
 
+## Docker images
+
+Dockerhub: https://hub.docker.com/r/adamkoro/docker-volume-backup
+
+### Tags
+
+- latest: Latest builded image
+- Commit hashes: If you need you can use specific image via commit hash
+- Tags: These are the version of the script
+
 ## Environment Variables
 
 | Variable | Description | Default |