Initial web ui and control for robot

webui/Dockerfile

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+# Stage 1: Build the Vite/React frontend
+FROM node:22-alpine AS frontend-builder
+
+WORKDIR /build
+COPY frontend/package.json ./
+RUN npm install
+COPY frontend/ ./
+
+# Passed in via docker-compose build args so the URL is baked into the bundle.
+# e.g. VITE_WEBRTC_WS_URL=ws://raspberrypi.local:8443
+ARG VITE_WEBRTC_WS_URL
+ENV VITE_WEBRTC_WS_URL=${VITE_WEBRTC_WS_URL}
+
+RUN npm run build
+
+# Stage 2: FastAPI + ROS 2 runtime
+FROM ros:kilted-ros-core
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        python3-venv \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY backend/requirements.txt /tmp/requirements.txt
+RUN python3 -m venv /app/venv && \
+    /app/venv/bin/pip install --no-cache-dir -r /tmp/requirements.txt
+
+COPY --from=frontend-builder /build/dist /app/static
+COPY backend/ /app/
+
+WORKDIR /app
+
+EXPOSE 8080
+
+CMD ["/bin/bash", "-c", "source /opt/ros/$ROS_DISTRO/setup.bash && /app/venv/bin/python3 main.py"]