🔧 make the app docker ready

Dockerfile

@@ -0,0 +1,31 @@
+# App build
+FROM node:20-alpine as build-stage
+
+ARG user=node
+ARG project_dir=/opt/node_app
+ARG NODE_ENV=production
+ARG PORT=3000
+
+ENV NODE_ENV $NODE_ENV
+ENV PORT $PORT
+ENV NODE_OPTIONS="--max_old_space_size=4096"
+
+EXPOSE $PORT
+
+## Enable corepack for proper version of YARN
+RUN corepack enable
+
+RUN mkdir $project_dir && chown $user:$user $project_dir
+USER $user
+WORKDIR $project_dir
+
+## Copy file for YARN then install all deps
+COPY --chown=$user .yarnrc.yml yarn.lock* package.json ./
+RUN yarn install --frozen-lockfile
+
+COPY --chown=$user . .
+
+## Build the app
+RUN yarn run build
+
+CMD ["yarn", "start"]