Use slimmer node base image

.forgejo/workflows/ci.yml

@@ -200,7 +200,6 @@ jobs:
       - name: Build frontend container image
         run: |
           podman --remote build --no-cache \
-            --storage-opt overlay.mountopt=size=20G \
             --build-arg NEXT_PUBLIC_API_HOST=${{ secrets.PROD_BACKEND_HOST }} \
             --build-arg NEXT_PUBLIC_API_PORT=${{ secrets.PROD_BACKEND_PORT }} \
             -f frontend/Dockerfile \

frontend/Dockerfile

@@ -1,23 +1,10 @@
-# ---------- deps ----------
-FROM docker.io/node:20-alpine AS deps
-WORKDIR /app
-
-# Install only dependencies first
-COPY package*.json ./
-RUN npm install --production --no-audit --no-fund
-
 # ---------- build ----------
-FROM docker.io/node:20-alpine AS builder
+FROM docker.io/node:20-slim AS builder
 WORKDIR /app
 
-# Copy production dependencies from deps stage
-COPY --from=deps /app/node_modules ./node_modules
-
-# Copy package files
+# Install dependencies with minimal footprint
 COPY package*.json ./
-
-# Install dev dependencies
-RUN npm install --only=dev --no-audit --no-fund
+RUN npm cache clean --force && npm install --no-audit --no-fund --prefer-offline
 
 # Copy app source
 COPY . .
@@ -32,11 +19,11 @@ ENV NEXT_PUBLIC_API_HOST=${NEXT_PUBLIC_API_HOST}
 ENV NEXT_PUBLIC_API_PORT=${NEXT_PUBLIC_API_PORT}
 
 RUN npm run build
-# Clean up unnecessary files to save space after build
-RUN rm -rf node_modules .next/cache
+# Clean up to save space
+RUN rm -rf node_modules .next/cache ~/.npm
 
 # ---------- runner (standalone) ----------
-FROM docker.io/node:20-alpine AS runner
+FROM docker.io/node:20-slim AS runner
 WORKDIR /app
 
 # runtime env