fix: update dockerfile for the newly created adminforth app

Author: yaroslav8765

adminforth/commands/createApp/templates/Dockerfile.hbs

@@ -1,7 +1,7 @@
-FROM node:{{nodeMajor}}-slim
+FROM devforth/node20-pnpm:latest
 WORKDIR /code/
-ADD package.json package-lock.json /code/
-RUN npm ci  
+ADD package.json pnpm-lock.yaml pnpm-workspace.yaml /code/
+RUN pnpm i  
 ADD . /code/
-RUN npx adminforth bundle
-CMD ["sh", "-c", "npm run migrate:prod && npm run prod"]
+RUN pnpm exec adminforth bundle
+CMD ["sh", "-c", "pnpm migrate:prod && pnpm prod"]