chore(docker): Node.js 20 → 24 LTS

Node 20 ist seit April 2026 End-of-Life. Backend- und Frontend-Images
laufen jetzt auf node:24-alpine; @types/node im Backend auf ^24 angehoben.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

paperless-backend/Dockerfile

@@ -1,5 +1,5 @@
 # Backend
-FROM node:20-alpine AS builder
+FROM node:24-alpine AS builder
 RUN apk add --no-cache git
 WORKDIR /app
 COPY package*.json ./
@@ -8,7 +8,7 @@ COPY . .
 RUN npm run build
 
 # Production
-FROM node:20-alpine
+FROM node:24-alpine
 RUN apk add --no-cache ghostscript imagemagick font-liberation fontconfig
 WORKDIR /app
 COPY --from=builder /app/dist ./dist

paperless-backend/package-lock.json

@@ -55,7 +55,7 @@
         "@types/jest": "^30.0.0",
         "@types/mailparser": "^3.4.6",
         "@types/multer": "^2.1.0",
-        "@types/node": "^22.10.7",
+        "@types/node": "^24.19.2",
         "@types/nodemailer": "^8.0.0",
         "@types/qrcode": "^1.5.6",
         "@types/supertest": "^6.0.2",
@@ -4105,12 +4105,12 @@
       }
     },
     "node_modules/@types/node": {
-      "version": "22.19.15",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-22.19.15.tgz",
-      "integrity": "sha512-F0R/h2+dsy5wJAUe3tAU6oqa2qbWY5TpNfL/RGmo1y38hiyO1w3x2jPtt76wmuaJI4DQnOBu21cNXQ2STIUUWg==",
+      "version": "24.19.2",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.19.2.tgz",
+      "integrity": "sha512-93d49wCWJkCyN87MxLpNN6KXPCwFw7bVUg79mGUV1OS40JGWwVCr8n61DXCSqz7CV6/VfPkb7xec7uP2M+QHWQ==",
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~6.21.0"
+        "undici-types": ">=7.24.0 <7.24.7"
       }
     },
     "node_modules/@types/nodemailer": {
@@ -13062,21 +13062,10 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/undici": {
-      "version": "6.25.0",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-6.25.0.tgz",
-      "integrity": "sha512-ZgpWDC5gmNiuY9CnLVXEH8rl50xhRCuLNA97fAUnKi8RRuV4E6KG31pDTsLVUKnohJE0I3XDrTeEydAXRw47xg==",
-      "license": "MIT",
-      "optional": true,
-      "peer": true,
-      "engines": {
-        "node": ">=18.17"
-      }
-    },
     "node_modules/undici-types": {
-      "version": "6.21.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
-      "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
+      "version": "7.24.6",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.24.6.tgz",
+      "integrity": "sha512-WRNW+sJgj5OBN4/0JpHFqtqzhpbnV0GuB+OozA9gCL7a993SmU+1JBZCzLNxYsbMfIeDL+lTsphD5jN5N+n0zg==",
       "license": "MIT"
     },
     "node_modules/universalify": {

paperless-backend/package.json

@@ -70,7 +70,7 @@
     "@types/jest": "^30.0.0",
     "@types/mailparser": "^3.4.6",
     "@types/multer": "^2.1.0",
-    "@types/node": "^22.10.7",
+    "@types/node": "^24.19.2",
     "@types/nodemailer": "^8.0.0",
     "@types/qrcode": "^1.5.6",
     "@types/supertest": "^6.0.2",