Running commands in HOOKS

[robflate]

I need a little guidance on running commands in HOOKS. The following gives an error;

docker ps --format '{{.Names}}' | grep -v 'backrest|traefik|crowdsec|socket-proxy' | xargs docker stop

Error

error: fatal: template rendering: execute template: template: template:1:22: executing "template" at <.Names>: can't evaluate field Names in type tasks.HookVars

I'd rather have the commands in the GUI rather than making separate scripts. Advice and general guidance on how to make commands suitable for Backrest appreciated, thanks.

[garethgeorge]

Ah, this is a bit tricky. Backrest uses go templates for substituting variables into scripts and messages, and so does docker cli :)

You'll need to escape the go template string {{ .Names }} e.g. as {{"{{"}} .Names {{"}}"}} (which yes -- is pretty ugly).