Integrate Oudelaa backend features, security, tests, and deployment updates

.dockerignore

@@ -0,0 +1,17 @@
+.git
+.github
+.env
+.env.*
+!.env.example
+node_modules
+dist
+coverage
+uploads
+*.log
+npm-debug.log*
+.agents
+.codex
+.vscode
+.idea
+postman
+docs