feat:#65 increased OCI image base images versions, slightly optimized Dockerfiles and adjust docker-compose.yml's to make them OCI compliant

docker-compose.prod.yml

@@ -45,7 +45,7 @@ services:
       - "net"
 
   rproxy:
-    image: bitnami/nginx:1.25
+    image: docker.io/bitnami/nginx:1.25
     restart: always
     volumes:
       - ./reverseproxy.conf:/opt/bitnami/nginx/conf/nginx.conf