feature(caddy): add cors

Caddyfile

@@ -5,7 +5,35 @@
   email ${MAPS_EMAIL}
 }
 
+
+(cors) {
+  @cors_preflight{args.0} method OPTIONS
+  @cors{args.0} header Origin {args.0}
+
+  handle @cors_preflight{args.0} {
+    header {
+      Access-Control-Allow-Origin "{args.0}"
+      Access-Control-Allow-Methods "GET, POST, PUT, PATCH, DELETE, OPTIONS"
+      Access-Control-Allow-Headers *
+      Access-Control-Max-Age "3600"
+      defer
+    }
+    respond "" 204
+  }
+
+  handle @cors{args.0} {
+    header {
+      Access-Control-Allow-Origin "{args.0}"
+      Access-Control-Expose-Headers *
+      defer
+    }
+  }
+}
+
 ${MAPS_DOMAIN} {
+  import cors https://${MAPS_SERVE_DOMAIN}
+  import cors https://www.${MAPS_SERVE_DOMAIN}
+  import cors https://*.${MAPS_SERVE_DOMAIN}
   handle_path /tiles/* {
     pmtiles_proxy {
       bucket ${MAPS_PMTILES_LOCATION}

entrypoint.sh

@@ -6,12 +6,14 @@ echo "Environment variables:"
 echo "MAPS_DOMAIN=${MAPS_DOMAIN}"
 echo "MAPS_PMTILES_LOCATION=${MAPS_PMTILES_LOCATION}"
 echo "MAPS_EMAIL=${MAPS_EMAIL}"
+echo "MAPS_SERVE_DOMAIN=${MAPS_SERVE_DOMAIN}"
 
 # Replace environment variables in Caddyfile
 export MAPS_DOMAIN
 export MAPS_PMTILES_LOCATION
 export MAPS_EMAIL
-envsubst '${MAPS_DOMAIN} ${MAPS_PMTILES_LOCATION} ${MAPS_EMAIL}' < /etc/caddy/Caddyfile.template > /etc/caddy/Caddyfile
+export MAPS_SERVE_DOMAIN
+envsubst '${MAPS_DOMAIN} ${MAPS_PMTILES_LOCATION} ${MAPS_EMAIL} ${MAPS_SERVE_DOMAIN}' < /etc/caddy/Caddyfile.template > /etc/caddy/Caddyfile
 
 echo "Caddyfile:"
 cat /etc/caddy/Caddyfile