ci(build): update Dockerfile to Node 24 and use pnpm via corepack

Switch base images to node:24-trixie-slim, enable corepack and PNPM env vars,
replace npm commands with pnpm, add pnpm-lock.yaml copy, and use a
cache-mounted pnpm store for installs (build and runtime).

Author: kdev

Dockerfile

@@ -1,25 +1,36 @@
-FROM node:20-slim as build
+FROM node:24-trixie-slim as build
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+ENV CI=true
+RUN corepack enable
 WORKDIR /home/node/
 COPY . .
-RUN npm pkg delete scripts.prepare
+RUN pnpm pkg delete scripts.prepare
 
 RUN apt update
 RUN apt install -y python3 libcurl4-openssl-dev libssl-dev build-essential
 
-RUN npm ci
-RUN npm run build
+RUN corepack install
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
+RUN pnpm run build
 
-FROM node:20-slim
+FROM node:24-trixie-slim
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+ENV CI=true
+RUN corepack enable
 LABEL org.opencontainers.image.source=https://github.com/LEDBrain/Community-Service
 LABEL org.opencontainers.image.licenses=MIT
 
 WORKDIR /home/node/
-COPY --from=build /home/node/package*.json ./
+COPY --from=build /home/node/package.json ./
+COPY --from=build /home/node/pnpm-lock.yaml ./
 COPY --from=build /home/node/dist ./
 COPY --from=build /home/node/prisma ./prisma
 RUN apt update
 RUN apt install -y python3 libcurl4-openssl-dev libssl-dev build-essential openssl
-RUN npm ci --omit=dev
+RUN corepack install
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile --prod
 # USER root
 
 EXPOSE 3000
@@ -31,4 +42,4 @@ ENV DATABASE_URL $DATABASE_URL
 ENV PORT 3000
 ENV HOST $HOSTNAME
 
-CMD npm run migrate:prod && node ./src/index.js
+CMD pnpm run migrate:prod && node ./src/index.js