Use node:lts docker image

masiuchi · masiuchi · commit 8f03e1229413 · 2026-02-04T11:02:59.000+09:00
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:20
+FROM node:lts
 WORKDIR /root/docs
 COPY package.json package-lock.json ./
 RUN npm ci --include dev
