Documentation updates (#750)

* add /usr/share/zoneinfo bind mount

* update description with timezone bind mount

* correct image size (uncompressed)

* remove specific image size

Author: mmichalak-swe

docs/how-tos/set-container-timezone.md

@@ -9,7 +9,7 @@ nav_order: 8
 
 By default a container based on this image will run in the UTC timezone.
 As the image is designed to be as small as possible, additional timezone data is not included.
-In case you want to run your cron rules in your local timezone (respecting DST and similar), you can mount your Docker host's `/etc/timezone` and `/etc/localtime` in read-only mode:
+In case you want to run your cron rules in your local timezone (respecting DST and similar), you can mount your Docker host's `/etc/timezone`, `/etc/localtime`, and `/usr/share/zoneinfo` in read-only mode:
 
 ```yml
 services:
@@ -19,6 +19,7 @@ services:
       - data:/backup/my-app-backup:ro
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
+      - /usr/share/zoneinfo:/usr/share/zoneinfo:ro
 
 volumes:
   data:

docs/index.md

@@ -12,7 +12,7 @@ Backup Docker volumes locally or to any S3, WebDAV, Azure Blob Storage, Dropbox,
 
 ---
 
-The [offen/docker-volume-backup](https://hub.docker.com/r/offen/docker-volume-backup) Docker image can be used as a lightweight (below 15MB) companion container to an existing Docker setup.
+The [offen/docker-volume-backup](https://hub.docker.com/r/offen/docker-volume-backup) Docker image can be used as a lightweight companion container to an existing Docker setup.
 It handles __recurring or one-off backups of Docker volumes__ to a __local directory__, __any S3, WebDAV, Azure Blob Storage, Dropbox, Google Drive or SSH compatible storage (or any combination thereof) and rotates away old backups__ if configured. It also supports __encrypting your backups using GPG__ and __sending notifications for (failed) backup runs__.
 
 {: .note }