Add meta.json and update server infrastructure for template management

app/Dockerfile

@@ -0,0 +1,22 @@
+FROM node:20.9-slim
+
+WORKDIR /app
+
+# Crear la estructura de directorios
+RUN mkdir -p public/templates
+
+# Copiar package.json y server.js
+COPY ./app/package.json ./
+COPY ./app/server.js ./
+
+# Copiar la carpeta templates
+COPY ./templates ./public/templates/
+
+# Instalar dependencias
+RUN npm install express cors
+
+# Exponer el puerto
+EXPOSE 4000
+
+# Iniciar el servidor
+CMD ["node", "server.js"]