Switch to pnpm

Dockerfile

@@ -1,35 +1,19 @@
-# Step 1: Set the base image to Node.js
-FROM node:18-alpine AS build
-
-# Step 2: Set the working directory inside the container
+FROM node:22-slim AS base
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+RUN corepack enable
+COPY . /app
 WORKDIR /app
 
-# Step 3: Copy the package.json and package-lock.json (or yarn.lock) for dependency installation
-COPY package.json package-lock.json ./
+FROM base AS prod-deps
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --prod --frozen-lockfile
 
-# Step 4: Install dependencies
-RUN npm install
+FROM base AS build
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
+RUN pnpm run build
 
-# Step 5: Copy the rest of the project files into the container
-COPY . .
-
-# Step 6: Build the Next.js app
-RUN npm run build
-
-# Step 7: Create the final image (production stage)
-FROM node:18-alpine
-
-# Set the working directory inside the container for production
-WORKDIR /app
-
-# Copy the necessary files from the build stage
-COPY --from=build /app ./
-
-# Step 8: Install production dependencies only (optional)
-RUN npm install --production
-
-# Step 9: Expose the default Next.js port
+FROM base
+COPY --from=prod-deps /app/node_modules /app/node_modules
+COPY --from=build /app/.next /app/.next
 EXPOSE 3000
-
-# Step 10: Set the command to run the Next.js app
-CMD ["npm", "start"]
+CMD [ "pnpm", "start" ]

package.json

@@ -3,6 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "scripts": {
+    "preinstall": "npx only-allow pnpm",
     "dev": "next dev --turbopack",
     "build": "next build",
     "start": "next start",
@@ -24,5 +25,5 @@
     "eslint-config-next": "15.1.3",
     "@eslint/eslintrc": "^3"
   },
-  "packageManager": "yarn@1.22.22+sha512.a6b2f7906b721bba3d67d4aff083df04dad64c399707841b7acf00f6b133b7ac24255f2652fa22ae3534329dc6180534e98d17432037ff6fd140556e2bb3137e"
+  "packageManager": "pnpm@9.15.2+sha512.93e57b0126f0df74ce6bff29680394c0ba54ec47246b9cf321f0121d8d9bb03f750a705f24edc3c1180853afd7c2c3b94196d0a3d53d3e069d9e2793ef11f321"
 }

pnpm-workspace.yaml

@@ -0,0 +1,7 @@
+packages:
+  # include packages in subfolders (e.g. apps/ and packages/)
+  - "apps/**"
+  - 'packages/**'
+  # if required, exclude some directories
+  - '!**/test/**'
+