Environment variables in caddy.json

[timelordx]

Expanding env variable into multiple strings in json config

The {$VAR} style environment placeholders are Caddyfile-specific. Those are replaced at Caddyfile-adapt time, i.e. before the Caddyfile is transformed into a JSON config. The {env.VAR} style does work in JSON, but only in locations where the given module actually attempts to replace the config value. It’s not possible to expand one config value into multiple; trying to support that would add significant complexity to Caddy which isn’t worth it. Instead, you should write a script that replac…