switch from nginx to caddy

caddy/sites/ha.caddy

@@ -0,0 +1,26 @@
+ha.{$SUBDOMAIN}.{$DOMAIN} {
+	log {
+		output file /var/log/ha.log
+	}
+
+	route {
+		@app <<CEL
+				header({'X-Requested-With': 'io.homeassistant.companion.android'}) ||
+				header_regexp('User-Agent', '^Home Assistant') ||
+				header_regexp('User-Agent', 'Android')
+		CEL
+		handle @app {
+			reverse_proxy host:8123
+		}
+		handle {
+			reverse_proxy /outpost.goauthentik.io/* http://host:19000
+			forward_auth http://host:19000 {
+				uri /outpost.goauthentik.io/auth/caddy?rd={http.request.uri}
+				copy_headers {
+					X-Homeassistant-User
+				}
+			}
+			reverse_proxy host:8123
+		}
+	}
+}