Add custom homelab dashboard stack

apps/dashboard/Dockerfile

@@ -0,0 +1,19 @@
+FROM python:3.12-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+WORKDIR /app/backend
+
+COPY backend/requirements.txt ./requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY backend/app ./app
+WORKDIR /app
+COPY dashboard.html ./dashboard.html
+COPY assets ./assets
+
+WORKDIR /app/backend
+EXPOSE 8000
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]