edit docker file

Dockerfile

@@ -1,73 +1,28 @@
-# ============================================
-# Stage 1: Install dependencies
-# ============================================
-
-ARG NODE_VERSION=22-slim
-
-FROM node:${NODE_VERSION} AS dependencies
-
+FROM node:20-bookworm-slim AS base
 WORKDIR /app
-
-# Install bun to use bun.lock for dependency resolution
-RUN npm install -g bun
-
-# Copy package-related files to leverage Docker cache
-COPY package.json bun.lock* ./
-
-# Install dependencies with frozen lockfile for reproducible builds
-RUN --mount=type=cache,target=/root/.bun/install/cache \
-    bun install --no-save --frozen-lockfile
-
-# ============================================
-# Stage 2: Build the Next.js application
-# ============================================
-
-FROM node:${NODE_VERSION} AS builder
-
-WORKDIR /app
-
-COPY --from=dependencies /app/node_modules ./node_modules
-COPY . .
-
-ENV NODE_ENV=production
 ENV NEXT_TELEMETRY_DISABLED=1
 
-# Build-time env vars — override these with --build-arg or in compose.yml
-ARG NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY
-ARG NEXT_PUBLIC_CLERK_SIGN_IN_URL=/auth/sign-in
-ARG NEXT_PUBLIC_CLERK_SIGN_UP_URL=/auth/sign-up
-ARG NEXT_PUBLIC_SENTRY_DISABLED=true
+FROM base AS deps
+COPY package.json package-lock.json ./
+RUN npm install --no-audit --no-fund
 
+FROM base AS builder
+ENV NODE_ENV=production
 ENV BUILD_STANDALONE=true
-
+ARG NEXT_PUBLIC_SENTRY_DISABLED=true
+ENV NEXT_PUBLIC_SENTRY_DISABLED=${NEXT_PUBLIC_SENTRY_DISABLED}
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
 RUN npm run build
 
-# ============================================
-# Stage 3: Production runner
-# ============================================
-
-FROM node:${NODE_VERSION} AS runner
-
+FROM node:20-bookworm-slim AS runner
 WORKDIR /app
-
 ENV NODE_ENV=production
-ENV PORT=3000
-ENV HOSTNAME="0.0.0.0"
 ENV NEXT_TELEMETRY_DISABLED=1
-
-# Copy public assets
-COPY --from=builder --chown=node:node /app/public ./public
-
-# Create .next dir with correct permissions for prerender cache
-RUN mkdir .next && chown node:node .next
-
-# Copy standalone output and static files
-COPY --from=builder --chown=node:node /app/.next/standalone ./
-COPY --from=builder --chown=node:node /app/.next/static ./.next/static
-
-# Run as non-root user
-USER node
-
+ENV PORT=3000
+ENV HOSTNAME=0.0.0.0
+COPY --from=builder /app/public ./public
+COPY --from=builder /app/.next/standalone ./
+COPY --from=builder /app/.next/static ./.next/static
 EXPOSE 3000
-
 CMD ["node", "server.js"]