Optimize docker image size

.dockerignore

@@ -0,0 +1,9 @@
+node_modules
+.next
+.gitignore
+README.md
+.dockerignore
+.git
+.vscode
+.idea
+.github

Dockerfile

@@ -1,42 +1,37 @@
-FROM node:lts as base
+# Build stage
+FROM node:20-slim as builder
 
-# Set environment variables for pnpm
 ENV PNPM_HOME="/pnpm"
 ENV PATH="$PNPM_HOME:$PATH"
 RUN corepack enable
 
-WORKDIR /base
-COPY package.json pnpm-lock.yaml ./
-RUN pnpm install --frozen-lockfile
-COPY . .
 
-# Build stage: build the Next.js application
-FROM base as build
+WORKDIR /builder
+COPY package.json pnpm-lock.yaml ./
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
+
 ENV NODE_ENV=production
 
-WORKDIR /base
+COPY . .
+
 RUN pnpm build
 
 # Production stage: serve the application
-FROM node:lts as prod
-ENV NODE_ENV=production
+FROM node:20-slim as runner
+WORKDIR /runner
 
-WORKDIR /app
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
 RUN corepack enable
-COPY package.json pnpm-lock.yaml ./
-RUN pnpm install --production
 
-# Copy build artifacts from the build stage
-COPY --from=build /base/.next ./.next
-COPY --from=build /base/public ./public
-COPY --from=build /base/next.config.mjs ./
+## Copy build artifacts from the build stage
+COPY --from=builder /builder/package.json ./
+#COPY --from=builder /builder/node_modules ./node_modules
+COPY --from=builder /builder/.next/standalone ./.next/standalone/
+COPY --from=builder /builder/.next/static ./.next/static
+COPY --from=builder /builder/public ./public
+COPY --from=builder /builder/next.config.mjs ./
 
-# Expose the port for the application
+#FROM runner as server
 EXPOSE 3000
-
-# Copy and configure the entrypoint script
-COPY docker-entrypoint.sh /docker-entrypoint.sh
-RUN chmod +x /docker-entrypoint.sh
-ENTRYPOINT ["/docker-entrypoint.sh"]
-
-CMD ["pnpm", "start"]
+CMD ["pnpm", "start:standalone"]

next.config.mjs

@@ -4,8 +4,9 @@ import { withPayload } from '@payloadcms/next/withPayload'
 const nextConfig = {
   // Your Next.js config here
   experimental: {
-    reactCompiler: false
-  }
+    reactCompiler: false,
+  },
+  output: 'standalone',
 }
 
 export default withPayload(nextConfig)

package.json

@@ -13,17 +13,16 @@
     "lint": "cross-env NODE_OPTIONS=--no-deprecation next lint",
     "ci": "payload migrate && pnpm build",
     "generate:types": "payload generate:types",
-    "standalone-script": "node ./src/scripts/standalone-script.js"
+    "standalone-script": "node ./standalone-script.js",
+    "start:standalone": "node .next/standalone/server.js"
   },
   "engines": {
     "node": "^18.20.2 || >=20.6.0"
   },
   "dependencies": {
     "@payloadcms/db-mongodb": "3.0.0-beta.40",
-    "@payloadcms/db-postgres": "3.0.0-beta.40",
     "@payloadcms/next": "3.0.0-beta.40",
     "@payloadcms/richtext-lexical": "3.0.0-beta.40",
-    "@payloadcms/richtext-slate": "3.0.0-beta.40",
     "@payloadcms/ui": "3.0.0-beta.40",
     "cross-env": "^7.0.3",
     "graphql": "^16.8.1",