fix(docker): pass .env.local to the final stage of docker image bui…

…lding

  ## problem
  - the app would not load because the `.env.local` file was not present
    - this is an issue because iron-session uses an ENV to encrypt session cookie content using a password
    - this password is loaded from `.env.local` file
    - if the ENV is not present, the rest of the app will not work

  ## solution
  - copy `.env.local` file from the building stage to the running stage of building docker image

  ## why
  - without the solution
    - iron-session will not work
    - iron-session in NextJS middleware will not work

  ## where
  - ./dockerfile

  ## usage

dockerfile

@@ -24,7 +24,7 @@
 
 ####################################################################################################
 
-# Base on offical Node.js Alpine image
+# Base on official Node.js Alpine image
 FROM node:alpine as builder
 
 # Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
@@ -70,6 +70,7 @@ COPY --from=builder --chown=node:node /usr/app/package.json     ./package.json
 # https://nextjs.org/docs/advanced-features/output-file-tracing
 COPY --from=builder --chown=node:node /usr/app/.next/standalone ./
 COPY --from=builder --chown=node:node /usr/app/.next/static     ./.next/static
+COPY --from=builder --chown=node:node /usr/app/.env.local       ./.env.local
 
 USER node