Backing up vaultwarden

[mattkurtis]

I am running vaultwarden in a Proxmox LXC, and I would like to use backrest to back it up. I have successfully installed backrest and it's able to back my vaultwarden folder. However, because vaultwarden is using sqlite3 and there is potentially changes being written to the database while restic is backing it up, this isn't the recommended approach.

Per the vaultwarden documents, they recommend running the vaultwarden backup command to create a backup sqlite file, which can then backup.

My vaultwarden instance is installed at /opt/vaultwarden. So the vaultwarden executable is at /opt/vaultwarden/bin/vaultwarden.

I have added this to my docker compose file:
- /opt/vaultwarden:/vaultwarden

My plan was to create a CONDITION_SNAPSHOT_START hook with this script:
#!/bin/bash /vaultwarden/bin/vaultwarden backup

But it does not work, I get a "required file not found" error

I can see that docker is mounting the vaultwarden directory by running docker exec -it backrest bash and viewing the filesystem. However, I am unable to execute the vaultwarden file. I get the same "required file not found" error.

Is there a recommended approach for how to achieve this?