optimize web dockerfile

.github/workflows/build-web-image.yml

@@ -42,7 +42,7 @@ jobs:
       uses: docker/build-push-action@v4
       with:
         context: "{{defaultContext}}:web"
-        platforms: ${{ github.ref == 'refs/heads/deploy/dev' && 'linux/amd64' || 'linux/amd64,linux/arm64' }}
+        platforms: linux/amd64,linux/arm64
         build-args: |
           COMMIT_SHA=${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.revision'] }}
         push: true

web/Dockerfile

-FROM node:18.17.0-alpine
+FROM node:18.17.0-alpine AS base
+FROM base AS deps
+WORKDIR /app/web
+COPY package.json ./package.json
+RUN npm install --only=prod
 
-LABEL maintainer="takatost@gmail.com"
+FROM base AS builder
+WORKDIR /app/web
+COPY --from=deps /app/web/node_modules ./node_modules
+COPY . .
+RUN npm run build
 
+FROM base AS runner
+LABEL maintainer="takatost@gmail.com"
 ENV NODE_ENV=production
 ENV EDITION SELF_HOSTED
 ENV DEPLOY_ENV PRODUCTION
 ENV CONSOLE_API_URL http://127.0.0.1:5001
 ENV APP_API_URL http://127.0.0.1:5001
-
-EXPOSE 3000
-
-WORKDIR /app/web
-
-COPY package.json /app/web/package.json
-
 RUN npm install pm2 -g
+WORKDIR /app/web
+COPY --from=builder /app/web/public ./public
+COPY --from=builder /app/web/.next/standalone ./
+COPY --from=builder /app/web/.next/static ./.next/static
 
-RUN npm install --only=prod
-
-COPY . /app/web/
-
-RUN npm run build
+EXPOSE 3000
 
 COPY docker/pm2.json /app/web/pm2.json
 COPY docker/entrypoint.sh /entrypoint.sh

web/docker/pm2.json

@@ -4,9 +4,8 @@
         "name": "WebApp",
         "exec_mode": "cluster",
         "instances": 1,
-        "script": "./node_modules/next/dist/bin/next",
-        "cwd": "/app/web",
-        "args": "start"
+        "script": "./server.js",
+        "cwd": "/app/web"
       }
     ]
   }

web/next.config.js

@@ -29,6 +29,7 @@ const nextConfig = {
     // https://nextjs.org/docs/api-reference/next.config.js/ignoring-typescript-errors
     ignoreBuildErrors: true,
   },
+  output: 'standalone',
   async redirects() {
     return [
       {