Fixes for SITE_URL validity checks (#10619)

* [docker] Allow HTTPS port to be specified for Caddy proxy

* Fix naming collision for INVENTREE_WEB_PORT

* Push InvenTree version first

* Adjust Caddyfile

- Change backup server

* Fix docstring

* Tweak for site URL check:

- Ignore port if SITE_LAX_PROTOCOL_CHECK is set
- Invert logic for readability

* Additional checks for port mismatch

* Adjust middleware checks

- Allow for less strict checking of CSRF_TRUSTED_ORIGINS

* Slight refactor

contrib/container/docker-compose.yml

@@ -101,6 +101,7 @@ services:
         restart: unless-stopped
 
     # caddy acts as reverse proxy and static file server
+    # You can adjust the ports that the proxy listens on via the .env file
     # https://hub.docker.com/_/caddy
     inventree-proxy:
         container_name: inventree-proxy
@@ -109,8 +110,8 @@ services:
         depends_on:
             - inventree-server
         ports:
-            - ${INVENTREE_WEB_PORT:-80}:80
-            - 443:443
+            - ${INVENTREE_HTTP_PORT:-80}:80
+            - ${INVENTREE_HTTPS_PORT:-443}:443
         env_file:
             - .env
         volumes: