feat: add docker-compose deployment and harden gateway startup

- add docker-compose setup with hermes-agent + hermes-webui

- make runtime config env-driven (compose vars + HERMES_BIN)

- improve gateway startup/restart resilience in docker

- make base image configurable via BASE_IMAGE/HERMES_AGENT_IMAGE

Closes https://github.com/EKKOLearnAI/hermes-web-ui/issues/14

.dockerignore

@@ -0,0 +1,7 @@
+.git
+.gitignore
+node_modules
+dist
+hermes_data
+*.log
+.DS_Store