fix: fixing docker build issues

.dockerignore

@@ -1,3 +1 @@
-.next/
-node_modules/
 .env.example

Dockerfile

@@ -1,33 +1,48 @@
-FROM node:18-alpine AS deps
+FROM node:18-alpine AS base
+
+# 1. Install dependencies only when needed
+FROM base AS deps
+# Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
 RUN apk add --no-cache libc6-compat
+
 WORKDIR /app
-COPY package.json package-lock.json* ./
+
+# Install dependencies based on the preferred package manager
+COPY package.json yarn.lock* package-lock.json* pnpm-lock.yaml* ./
 RUN \
-    if [ -f package-lock.json ]; then npm ci; \
+    if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
+    elif [ -f package-lock.json ]; then npm ci; \
+    elif [ -f pnpm-lock.yaml ]; then yarn global add pnpm && pnpm i; \
     else echo "Lockfile not found." && exit 1; \
     fi
 
-FROM node:18-alpine AS builder
+
+# 2. Rebuild the source code only when needed
+FROM base AS builder
 WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
-ENV NEXT_TELEMETRY_DISABLED 1
-
 RUN npx prisma generate
 RUN npm run build
 
-FROM node:18-alpine AS runner
+# 3. Production image, copy all the files and run next
+FROM base AS runner
 WORKDIR /app
 
-ENV NODE_ENV production
+ENV NODE_ENV=production
 ENV NEXT_TELEMETRY_DISABLED 1
 
-RUN addgroup --system --gid 1001 nodejs
+RUN addgroup -g 1001 -S nodejs
-RUN adduser --system --uid 1001 nextjs
+RUN adduser -S nextjs -u 1001
 
-COPY --from=builder /app/next.config.js ./
+# COPY --from=builder /app/public ./public
+
+# Automatically leverage output traces to reduce image size
+# https://nextjs.org/docs/advanced-features/output-file-tracing
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
 COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
 
+
 USER nextjs
 
 EXPOSE 3000

next.config.js

@@ -1,4 +1,6 @@
 /** @type {import('next').NextConfig} */
-const nextConfig = {}
+const nextConfig = {
+	output: 'standalone',
+};
 
-module.exports = nextConfig
+module.exports = nextConfig;