use a different port in new_migration.sh

new_migration.sh

@@ -4,13 +4,13 @@
 
 # create a postgres database for SimpleLogin
 docker rm -f sl-db
-docker run -p 5432:5432 --name sl-db -e POSTGRES_PASSWORD=postgres -e POSTGRES_DB=sl -d postgres
+docker run -p 15432:5432 --name sl-db -e POSTGRES_PASSWORD=postgres -e POSTGRES_DB=sl -d postgres
 
 # run run `flask db upgrade` to upgrade the DB to the latest stage and
-env DB_URI=postgresql://postgres:postgres@127.0.0.1:5432/sl flask db upgrade
+env DB_URI=postgresql://postgres:postgres@127.0.0.1:15432/sl flask db upgrade
 
 # finally `flask db migrate` to generate the migration script.
-env DB_URI=postgresql://postgres:postgres@127.0.0.1:5432/sl flask db migrate
+env DB_URI=postgresql://postgres:postgres@127.0.0.1:15432/sl flask db migrate
 
 # remove the db
 docker rm -f sl-db