feat(docker): añadir Dockerfile para contenerizar la aplicación

Dockerfile

@@ -0,0 +1,27 @@
+# --- Build ---
+FROM oven/bun:1.3-alpine AS builder
+
+WORKDIR /app
+
+COPY package.json bun.lock ./
+RUN bun install --frozen-lockfile
+
+COPY . .
+
+ARG VITE_API_URL=https://testapp.digitaltelecom.net
+ENV VITE_API_URL=${VITE_API_URL}
+
+RUN bun run build
+
+# --- Serve ---
+FROM nginx:1.27-alpine
+
+COPY docker/nginx.conf /etc/nginx/conf.d/default.conf
+COPY --from=builder /app/dist /usr/share/nginx/html
+
+EXPOSE 80
+
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD wget -qO- http://127.0.0.1/ > /dev/null || exit 1
+
+CMD ["nginx", "-g", "daemon off;"]