feat: update Dockerfile to ensure prisma directory is copied correctly and remove unnecessary .prisma copy

backend/Dockerfile

@@ -4,7 +4,9 @@
 FROM node:24.15.0-alpine AS deps
 WORKDIR /app
 COPY package.json package-lock.json ./
+COPY prisma ./prisma
 RUN npm ci --omit=dev
+RUN ./node_modules/.bin/prisma generate
 
 # Stage 2: Bygg applikationen (alla beroenden, kör tester)
 FROM node:24.15.0-alpine AS builder
@@ -26,7 +28,6 @@ ENV NODE_ENV=production
 COPY package.json ./
 COPY --from=deps /app/node_modules ./node_modules
 COPY --from=builder /app/prisma ./prisma
-COPY --from=builder /app/.prisma ./.prisma
 COPY --from=builder /app/dist ./dist
 
 EXPOSE 8080