Refactored the application's dockerization and added new services

This commit involves significant changes to the application's infrastructure. It refactors the application into two separate services: 'nibiru-auth-api' and 'nibiru-webhook-receiver'. Each service has its corresponding Dockerfile, Nginx & PHP-FPM configuration. It also provides a separate Nginx configuration for handling requests for each service. New environment files, start and stop scripts are introduced to facilitate local and production deployments.

nibiru-webhook-receiver/nginx/entrypoint.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# Substitute environment variables in the configuration templates
+envsubst '$NIBIRU_WEBHOOK_HOST $NIBIRU_WEHOOK_RECEIVER_VIRTUAL_HOST $FPM_VIRTUAL_PORT' < /etc/nginx/conf.d/default.conf.template > /etc/nginx/conf.d/default.conf
+
+# Start Nginx
+exec "$@"