node:lts is head to node:20

Dockerfile

@@ -13,7 +13,7 @@ RUN npm install npm@latest --global \
   && pnpm import \
   && pnpm install --prod
 
-FROM node:lts AS client
+FROM node:18-bookworm AS client
 
 WORKDIR /app
 

debian.Dockerfile

@@ -0,0 +1,59 @@
+FROM node:18-bookworm as server-dependencies
+
+RUN apt-get update \
+    && apt-get install -y \
+    tini
+
+WORKDIR /app
+
+COPY server/package.json server/package-lock.json ./
+
+RUN npm install npm@latest --global \
+  && npm install pnpm --global \
+  && pnpm import \
+  && pnpm install --prod
+
+FROM node:18-bookworm AS client
+
+WORKDIR /app
+
+COPY client/package.json client/package-lock.json ./
+
+RUN npm install npm@latest --global \
+  && npm install pnpm --global \
+  && pnpm import \
+  && pnpm install --prod
+
+COPY client .
+RUN DISABLE_ESLINT_PLUGIN=true npm run build
+
+FROM node:18-bookworm-slim AS final
+
+ARG USER=planka
+RUN useradd --no-create-home --shell /bin/bash $USER
+USER $USER
+
+WORKDIR /app
+
+COPY --chown=$USER:$USER start.sh .
+COPY --chown=$USER:$USER server .
+
+RUN mv .env.sample .env
+
+COPY --from=server-dependencies --chown=$USER:$USER /app/node_modules node_modules
+COPY --from=server-dependencies --chown=$USER:$USER /usr/bin/tini /usr/local/bin/tini
+
+COPY --from=client --chown=$USER:$USER /app/build public
+COPY --from=client --chown=$USER:$USER /app/build/index.html views/index.ejs
+
+VOLUME /app/public/user-avatars
+VOLUME /app/public/project-background-images
+VOLUME /app/private/attachments
+
+EXPOSE 1337
+
+# Use Tini to start Planka and shutdown gracefully:
+# https://github.com/nodejs/docker-node/blob/main/docs/BestPractices.md#handling-kernel-signals
+ENTRYPOINT ["tini", "--"]
+
+CMD ["./start.sh"]