Switch reverse proxy to custom OpenResty Docker image, update paths in docker-compose.yml and nginx.conf

docker-compose.yml

@@ -1,12 +1,12 @@
 services:
   reverse-proxy:
-    image: ghcr.io/zmartzone/lua-resty-openidc:latest
+    build: Dockerfile-openresty
     container_name: demo-nginx-proxy
     ports:
       - "25700:80"
     volumes:
-      - ./nginx.conf:/etc/nginx/nginx.conf:ro
-      - ./auth.lua:/etc/nginx/auth.lua:ro
+      - ./nginx.conf:/usr/local/openresty/nginx/conf/nginx.conf:ro
+      - ./auth.lua:/usr/local/openresty/nginx/conf/auth.lua:ro
     environment:
       - KEYCLOAK_CLIENT_SECRET=${KEYCLOAK_CLIENT_SECRET}
     env_file: