Reload caddy on new config updates

[FarisZR]

Recreating caddy doesn't happen unless the container image gets updated.
Which means config updates aren't reflected, unless Caddy gets manually restarted.

caddy should get restarted or have a reload on every config change

Relevant:
https://caddyserver.com/docs/running#usage
migrated from
aosus/hyper-aosus#487

[FarisZR]

Caddy --watch was suggested in matrix, however Caddy devs caution against using it in some use cases.
https://caddy.community/t/why-is-caddy-run-watch-dangerous/8981