Added docker build image

Dockerfile

@@ -0,0 +1,15 @@
+FROM node:latest-alpine
+
+RUN curl -f https://get.pnpm.io/v6.16.js | node - add --global pnpm
+
+WORKDIR /app
+
+# pnpm fetch richiede solo il file lock
+COPY pnpm-lock.yaml ./
+
+RUN pnpm fetch --prod
+
+ADD . ./
+RUN pnpm install -r --offline --prod
+
+CMD pnpm run build