Make docker-entrypoint pass through command args

The node:24 base image sets ENTRYPOINT ["docker-entrypoint.sh"]. We
override that script but the ENTRYPOINT still runs on every start, so
compose's `command:` was being handed to our script as args (and
silently ignored — we always exec'd `node dist/main.js`). That made the
`sleep infinity` override useless: the crash-looping app kept running.

Fix by execing "$@" when args are present so compose overrides work,
and set CMD to ["node","dist/main.js"] so normal (no-override) starts
still boot the app.

Dockerfile

@@ -19,4 +19,7 @@ ENV NODE_ENV=production \
     PI_CODING_AGENT_DIR=/pi-agent
 VOLUME ["/workspace", "/pi-agent"]
 
-CMD ["/usr/local/bin/docker-entrypoint.sh"]
+# The node base image already sets ENTRYPOINT ["docker-entrypoint.sh"], and we replaced that
+# script above at /usr/local/bin/docker-entrypoint.sh — so ours runs on every container start.
+# Keep CMD as the app command so compose overrides (command: ["sleep","infinity"], ...) work.
+CMD ["node", "dist/main.js"]