feat(docker): add automatic container entrypoint seeding script

Dockerfile

@@ -18,16 +18,18 @@ ENV HOST=0.0.0.0
 ENV PORT=3000
 ENV DATA_DIR=/app/data
 
-# Erstelle Kunden-Volume Ordner
-RUN mkdir -p /app/data && chown -R node:node /app
+# Ordner anlegen & Schreibrechte vorbereiten
+RUN mkdir -p /app/data
 
 COPY package*.json ./
 RUN npm ci --only=production
 
 COPY --from=builder /app/dist ./dist
 COPY --from=builder /app/public ./public
+COPY docker-entrypoint.sh /app/docker-entrypoint.sh
 
-USER node
+# Ausführungsrechte für das Entrypoint-Skript setzen
+RUN chmod +x /app/docker-entrypoint.sh
 
 EXPOSE 3000
 
@@ -35,4 +37,5 @@ EXPOSE 3000
 HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
   CMD wget --no-verbose --tries=1 --spider http://localhost:3000/api/health || exit 1
 
+ENTRYPOINT ["/app/docker-entrypoint.sh"]
 CMD ["node", "./dist/server/entry.mjs"]