Add mermaid experimental validation

Try to make mermaid work with nuxt-content

Dockerfile

 ### Stage Install ###
-FROM node:20.9-bookworm as install
+FROM node:21.1-bookworm-slim as install
 
 
 
@@ -11,7 +11,7 @@ RUN npm install
 
 
 ### STAGE: Dev
-FROM node:20.9-bookworm as dev
+FROM node:21.1-bookworm-slim as dev
 ARG BASE_URL=/
 ARG MEILI_HOST=http://localhost:7700
 ARG MEILI_API_KEY=api_key
@@ -29,7 +29,7 @@ CMD ["npm", "run", "dev"]
 
 
 ### STAGE: Build ###
-FROM node:20.9-bookworm as build
+FROM node:21.1-bookworm-slim as build
 
 WORKDIR /usr/src/app
 COPY --from=install /usr/src/app ./
@@ -37,7 +37,7 @@ COPY . /usr/src/app
 RUN npm run build
 
 ### STAGE: serve ###
-FROM node:20.9-bookworm as serve
+FROM node:21.1-bookworm-slim as serve
 
 WORKDIR /usr/src/app
 COPY --from=build /usr/src/app/.output ./
@@ -46,7 +46,7 @@ CMD [ "node", "server/index.mjs"]
 
 
 ### STAGE: Generate ###
-FROM node:20.9-bookworm as generate
+FROM node:21.1-bookworm-slim as generate
 ARG BASE_URL=/
 ARG MEILI_HOST=http://localhost:7700
 ARG MEILI_API_KEY