FIX: restore exit code 77 after the PostgreSQL 15 update

This corrects an oversight from 66a4854.

The second rebuild offers an opportunity to perform additional steps
after the upgrade, but before re-deploying the app on the new version.

This is especially useful in automated deployment workflows.
This also maintains compat for those already using this feature.

Author: mwaniki-wairungu

templates/postgres.15.template.yml

@@ -92,11 +92,13 @@ run:
 
          if [ "$free_disk" -lt "$required" ]; then
            echo
+           echo -------------------------------------------------------------------------------------
            echo "WARNING: Upgrading PostgreSQL would require an additional $(numfmt --to=si $(($required - $free_disk))) of disk space"
            echo "Please free up some space, or expand your disk, before continuing."
            echo
            echo 'To avoid upgrading change "templates/postgres.template.yml" TO "templates/postgres.13.template.yml" in containers/app.yml'
            echo 'You can run "./launcher start app" to restart your app in the meanwhile.'
+           echo -------------------------------------------------------------------------------------
            exit 1
          fi
 
@@ -137,7 +139,13 @@ run:
          echo UPGRADE OF POSTGRES COMPLETE
          echo
          echo Old ${PG_MAJOR_OLD} database is stored at /shared/postgres_data_old
+         echo
+         echo To complete the upgrade, rebuild again using:
+         echo
+         echo     ./launcher rebuild app
          echo -------------------------------------------------------------------------------------
+         # Magic exit status to denote no failure
+         exit 77
        fi
 
   - replace:

templates/postgres.template.yml

@@ -92,11 +92,13 @@ run:
 
          if [ "$free_disk" -lt "$required" ]; then
            echo
+           echo -------------------------------------------------------------------------------------
            echo "WARNING: Upgrading PostgreSQL would require an additional $(numfmt --to=si $(($required - $free_disk))) of disk space"
            echo "Please free up some space, or expand your disk, before continuing."
            echo
            echo 'To avoid upgrading change "templates/postgres.template.yml" TO "templates/postgres.13.template.yml" in containers/app.yml'
            echo 'You can run "./launcher start app" to restart your app in the meanwhile.'
+           echo -------------------------------------------------------------------------------------
            exit 1
          fi
 
@@ -137,7 +139,13 @@ run:
          echo UPGRADE OF POSTGRES COMPLETE
          echo
          echo Old ${PG_MAJOR_OLD} database is stored at /shared/postgres_data_old
+         echo
+         echo To complete the upgrade, rebuild again using:
+         echo
+         echo     ./launcher rebuild app
          echo -------------------------------------------------------------------------------------
+         # Magic exit status to denote no failure
+         exit 77
        fi
 
   - replace: