Adding postgresql database import command to creation - sql

Question

This is my shell command for creating a database. It is run as part of a deployment script to automatically create two databases without human intervention.
# POSTGRES
apt-get install -y postgresql
echo "CREATE ROLE deploy LOGIN ENCRYPTED PASSWORD '$APP_DB_PASS';" | sudo -u postgres psql
su postgres -c "createdb db1 --owner deploy"
su postgres -c "createdb db2 --owner deploy"
service postgresql reload
Within this code, could someone please explain how I can integrate importing a SQL file into postgresql within this stage.
I believe it is something like this but I haven't go that to work:
psql --username=postgres < /etc/schema.sql

Answer 1

On debian, you probably need to follow Daniel's comment because PostgreSQL is probably configured to require the OS user to be the same username as the db user.
So you need to
su postgres -c "psql -f /etc/schema.sql"
Alternatively you could put all these db creation commands in a nice little shell script (without the su postgres -c part) and then just run that all at once. Something like:
#!/bin/bash
echo "CREATE ROLE deploy LOGIN ENCRYPTED PASSWORD '$APP_DB_PASS';" | su postgres -c psql
createdb db1 --owner deploy
createdb db2 --owner deploy
psql db1 -f /etc/schema.sql
psql db2 -f /etc/schema.sql
Then you can run that with sudo or su -c and simplify the things that can go wrong, auth-wise.