fix(docker): bind webpack dev server to all interfaces

Change WEBPACK_DEVSERVER_HOST from 127.0.0.1 to 0.0.0.0 to make the
frontend accessible from outside the Docker container. This fixes an
issue where the frontend was only accessible from inside the container.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

docker-compose-light.yml

@@ -163,7 +163,7 @@ services:
       # configuring the dev-server to use the host.docker.internal to connect to the backend
       superset: "http://superset-light:8088"
       # Webpack dev server configuration
-      WEBPACK_DEVSERVER_HOST: "${WEBPACK_DEVSERVER_HOST:-127.0.0.1}"
+      WEBPACK_DEVSERVER_HOST: "${WEBPACK_DEVSERVER_HOST:-0.0.0.0}"
       WEBPACK_DEVSERVER_PORT: "${WEBPACK_DEVSERVER_PORT:-9000}"
     ports:
       - "${NODE_PORT:-9001}:9000"  # Parameterized port, accessible on all interfaces