Fixes

backend/Dockerfile

@@ -1,6 +1,14 @@
-FROM node:20-alpine
+FROM node:20-bookworm-slim
 WORKDIR /usr/src/app
 
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        poppler-utils \
+        tesseract-ocr \
+        tesseract-ocr-deu \
+        tesseract-ocr-eng \
+    && rm -rf /var/lib/apt/lists/*
+
 # Package-Dateien
 COPY package*.json ./