Update Dockerfile

Dockerfile

+# VERSIONS
+ARG NODE_VERSION=20.10.0
+ARG NPM_VERSION=10.2.5
+
 # --------------> The build image
-FROM node:20.10.0 AS build
+FROM node:$NODE_VERSION AS build
 RUN apt-get update && apt-get install -y --no-install-recommends dumb-init
 ARG NPM_TOKEN
 WORKDIR /usr/src/app
 COPY package*.json /usr/src/app/
 RUN echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" > .npmrc && \
+   npm install -g npm@$NPM_VERSION && \
    npm ci --omit=dev && \
    rm -f .npmrc
  
 # --------------> The production image
-FROM node:20.10.0-slim
+FROM node:$NODE_VERSION-slim
 ENV NODE_ENV production
 COPY --from=build /usr/bin/dumb-init /usr/bin/dumb-init
 USER node