http_cache module not found when lua_code_cache is off

This might be an issue not specific to this module but this is where i encountered it.

if i set `lua_code_cache off` in `http` block, i get the error the module is not found, when i comment that config line, the module loads and everything works.

Any idea why this might be happening?
I needed this in order to work on the scripts without restarting nginx all the time.
Also, not sure if it's relevant, but openresty is running in docker (based on alpine).

Thank you