🐳 optimize Dockerfile in speed and size (pnpm + layers)

ref #24

Dockerfile

@@ -2,21 +2,15 @@
 FROM node:14.15.1-alpine3.12
 WORKDIR /app
 COPY package.json ./
-RUN yarn
+RUN npm i -g pnpm
+RUN pnpm i
 COPY tsconfig.json ormconfig.js ./
 COPY src ./src
-RUN yarn build
-# module install
-# final
+RUN pnpm run build
+# final image
 FROM node:14.15.1-alpine3.12
 COPY package.json ormconfig.js ./
+RUN npm i -g pnpm
+RUN pnpm i --prod
 COPY --from=0 /app/dist dist
-# RUN npm install -g npm@7.1.2
-RUN npm i --production
-RUN npm i sqlite3
-RUN npm i pm2 -g
-
-HEALTHCHECK CMD curl --fail http://localhost:4010 || exit 1   
-
-ENTRYPOINT ["pm2-runtime","dist/app.js"]
-# ENTRYPOINT ["node","dist/app.js"]
+ENTRYPOINT ["node", "dist/app.js"]