allow .env in different folder

Dockerfile

@@ -5,14 +5,14 @@ WORKDIR /app
 RUN addgroup --system --gid 1001 nodejs
 RUN adduser --system --uid 1001 nextjs
 
-RUN mkdir /cfg
-RUN ln -s .env /cfg/.env
-
-USER nextjs
+# If /.env-file/.env is mounted into the container, its variables are made available to the server before it starts up.
+RUN mkdir -p /.env-file && touch /.env-file/.env && chown -R nextjs:nodejs /.env-file
 
 COPY --chown=nextjs:nodejs ./docker/apps/login/.next/standalone ./
 COPY --chown=nextjs:nodejs ./docker/apps/login/.next/static ./apps/login/.next/static
 COPY --chown=nextjs:nodejs ./docker/apps/login/public ./apps/login/public
 
+USER nextjs
 ENV HOSTNAME="0.0.0.0"
-CMD node apps/login/server.js
+
+CMD ["/bin/sh", "-c", " set -o allexport && . /.env-file/.env && set +o allexport && node apps/login/server.js"]