Draft: add first Dockerfile version

docker/Dockerfile

@@ -0,0 +1,48 @@
+ARG NODE_IMG=20-bookworm
+
+FROM node:${NODE_IMG} AS base
+
+RUN apt-get update && apt-get install --no-install-recommends -y tini &&\
+    find /var/lib/apt/lists/ /var/cache/apt/archives/ -type f -delete
+
+WORKDIR /home/node/app
+
+RUN mkdir -p /home/node/app/node_modules && chown -R node:node /home/node
+USER node
+COPY --chown=node:node package*.json ./
+
+# == deps
+FROM base AS deps
+RUN npm ci
+
+FROM deps AS sources
+COPY --chown=node:node . .
+
+FROM sources AS build-frontend
+RUN npm run buildJsFrontend
+RUN npm run buildCssFrontend
+
+FROM scratch AS frontend
+COPY --from=build-frontend /home/node/app/frontend/static/ /
+
+FROM build-frontend AS build-backend
+RUN npm run buildJsBackend
+
+FROM base AS backend
+
+COPY --from=deps /home/node/app/package*.json ./
+COPY --from=deps /home/node/app/node_modules ./node_modules
+RUN npm prune --omit=dev
+
+COPY --from=build-frontend /home/node/app/app/frontend ./app/frontend
+COPY --from=build-backend /home/node/app/app/backend ./app/backend
+
+ENV NODE_ENV=production
+ENV HTTP_SERVER_PROTOCOL="http"
+ENV HTTP_SERVER_HOST="0.0.0.0"
+ENV HTTP_SERVER_PORT="3300"
+
+EXPOSE 3300
+
+ENTRYPOINT [ "tini", "-g", "--" ]
+CMD [ "node", "./app/backend/app.js" ]