feat(docker): add Dockerfile for Next.js app in pnpm monorepo

Signed-off-by: Innei <tukon479@gmail.com>

Dockerfile

@@ -0,0 +1,64 @@
+# Dockerfile for Next.js app in a pnpm monorepo
+# This Dockerfile should be built from the root of the monorepo:
+# > docker build -t photo-gallery-ssr -f apps/ssr/dockerfile .
+
+# -----------------
+# Base stage
+# -----------------
+FROM node:20-alpine AS base
+WORKDIR /app
+RUN corepack enable
+
+# -----------------
+# Builder stage
+# -----------------
+FROM base AS builder
+
+RUN apk update && apk add --no-cache git
+# Copy dependency definition files to leverage Docker cache
+COPY pnpm-lock.yaml pnpm-workspace.yaml ./
+COPY package.json ./
+COPY apps/web/package.json ./apps/web/package.json
+COPY apps/ssr/package.json ./apps/ssr/package.json
+COPY packages/data/package.json ./packages/data/package.json
+
+COPY scripts ./scripts
+COPY config.json ./
+COPY builder.config.json ./
+
+# Install all dependencies
+RUN pnpm install --frozen-lockfile
+
+# Copy all source code
+COPY . .
+
+# Build the app.
+# The build script in the ssr package.json handles building the web app first.
+RUN pnpm --filter=@photo-gallery/ssr build
+
+# -----------------
+# Runner stage
+# -----------------
+FROM base AS runner
+
+WORKDIR /app
+
+ENV NODE_ENV=production
+# ENV PORT and other configurations are now in the config files
+# and passed through environment variables during runtime.
+RUN apk add --no-cache curl wget
+# Create a non-root user
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+USER nextjs
+
+COPY --from=builder --chown=nextjs:nodejs /app/apps/ssr/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/apps/ssr/.next/static /app/apps/ssr/.next/static
+COPY --from=builder --chown=nextjs:nodejs /app/apps/ssr/public /app/apps/ssr/public
+
+# The standalone output includes the server.js file.
+# The PORT environment variable is automatically used by Next.js.
+EXPOSE 3000
+
+CMD ["node", "apps/ssr/server.js"]