feat: Add vips dependencies for sharp in backend Dockerfile

- Added `vips-dev` and `vips` to build and runtime dependencies.
- Updated installation process to ensure compilation

backend/Dockerfile

@@ -25,14 +25,19 @@ FROM node:20-alpine
 WORKDIR /app
 
 # Install runtime dependencies (git for simple-git, sqlite3 CLI tool, vips for sharp)
-RUN apk add --no-cache git sqlite vips python3 make g++ vips-dev
+# Note: python3, make, g++ are needed for native module compilation
+RUN apk add --no-cache git sqlite vips vips-dev python3 make g++
 
 # Copy package files first
 COPY --from=builder /app/package*.json ./
 
-# Install production dependencies (will compile native modules in this stage)
+# Rebuild sharp for the correct architecture (linuxmusl-x64)
+# Install all production dependencies
 RUN npm ci --omit=dev || npm install --production
 
+# Clean up build dependencies after installation to reduce image size
+RUN apk del python3 make g++ vips-dev
+
 # Copy built files from builder
 COPY --from=builder /app/dist ./dist
 COPY --from=builder /app/src/db/migrations ./dist/db/migrations