Make Dockerfile tolerant to missing config files

Dockerfile

@@ -22,13 +22,15 @@ FROM node:20-alpine AS runner
 WORKDIR /app
 
 # Copy only the built assets and runtime dependencies from the builder
+# Copy only built assets and runtime dependencies
 COPY --from=builder /app/.next ./.next
 COPY --from=builder /app/public ./public
 COPY --from=builder /app/package*.json ./
-COPY --from=builder /app/next.config.mjs ./
-COPY --from=builder /app/next-env.d.ts ./
-COPY --from=builder /app/tsconfig.json ./
-
+# KORREKTUR: Flexibles Kopieren der Next-Konfiguration (egal ob .js oder .mjs)
+COPY --from=builder /app/next.config.* ./
+# Optionale TS-Dateien (nur kopieren, wenn vorhanden, blockiert den Build nicht mehr)
+COPY --from=builder /app/tsconfig.json ./ 2>/dev/null || true
+COPY --from=builder /app/next-env.d.ts ./ 2>/dev/null || true
 # Install production dependencies (already installed in builder, but ensure they are present)
 RUN npm ci --omit=dev