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 # backupsidecar
 
-Backup sidecar that automatically creates backups of one PVC and saves it to another PVC via restic
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+Backup sidecar that automatically creates backups of one PVC and saves it to another PVC via restic
+
+## Function
+A cronjob inside the container runs in the configured interval creating the backup and purging old backups.
+A notification is sent to gotify on completion of the backup or on error of either the backup or purge.
+
+## Environment Variables
+| ENV Variable | Required |Description| Example Value
+|--------------|----------|--------------|-
+|INTERVAL|yes|cronjob interval string|15 14 * * *|
+|RESTIC_REPOSITORY|yes|path of the restic repository|/mnt/backups/gitea|
+|SOURCEDIR |yes|path of the path to backup|/mnt/toBackup/|
+|KEEPLAST|yes|number of increments to keep (keep in mind that the number of backups to keep correlates with the interval in which they are created) |10|
+|RESTIC_PASSWORD|yes|password for the restic repository|******|
+|RUNONSTART|no|set to true to force a backup at the start of the container|true|
+|GOTIFYHOST|yes|URL of the gotify server (without trailing slash)|https://gotify.example.com|
+|GOTIFYTOKEN|yes|gotify app token|******|
+|GOTIFYTOPIC|yes|gotify topic to include in the notification|gotify|
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