Schema created in Docker by postgres user does not exist - postgresql

Question

I am building a Docker container for my PostgresSQL 9.4.5 database and I'd like to create the table structures when the container starts. In the script included in my /docker-entrypoint-initdb.d/ directory is this series of commands:
#!/usr/bin/env bash
export PGUSER=postgres
echo "***CREATING DATABASE, USERS, AND ROLES***"
psql <<-EOSQL
CREATE USER vpager WITH PASSWORD '<pass>';
CREATE DATABASE vpager;
GRANT ALL PRIVILEGES ON DATABASE vpager TO vpager;
REVOKE ALL ON DATABASE vpager FROM PUBLIC;
CREATE ROLE standarduser;
CREATE USER vpageruser WITH PASSWORD '<pass>';
\connect vpager
CREATE SCHEMA ticketing;
GRANT ALL PRIVILEGES ON SCHEMA ticketing TO vpager;
GRANT CONNECT ON DATABASE vpager TO standarduser;
GRANT SELECT, UPDATE, INSERT, DELETE ON ALL TABLES IN SCHEMA ticketing TO standarduser;
GRANT standarduser TO vpageruser;
EOSQL
echo "***CREATING TABLE STRUCTURES***"
psql -U vpager vpager < /docker-entrypoint-initdb.d/create-vpager-tables.sql
The SQL script:
CREATE TABLE ticketing.merchant
(
merchant_id SERIAL PRIMARY KEY,
now_serving INT
);
CREATE TABLE ticketing.ticket
(
ticket_id SERIAL,
merchant_id INT REFERENCES ticketing.merchant(merchant_id),
create_ts TIMESTAMP,
PRIMARY KEY (ticket_id, merchant_id)
);
As you can see, the idea is to create a non-privileged user for doing CRUD operations. The problem is that when the create-vpager-tables.sql command runs, it can't see the schema that postgres created:
ERROR: schema "ticketing" does not exist
STATEMENT: CREATE TABLE ticketing.merchant
(
merchant_id SERIAL PRIMARY KEY,
now_serving INT
);
ERROR: schema "ticketing" does not exist
ERROR: schema "ticketing" does not exist
Yet, if I add a CREATE SCHEMA statement to the top of create-vpager-tables.sql, it says it already exists:
ERROR: schema "ticketing" already exists
How do I resolve these errors? I tried setting my search path at the top of the SQL file, but the same thing happened; it's like a "Schrodinger" schema.

Answer 1

I figured it out. I put the create-vpager-tables.sql in the /docker-entrypoint-initdb.d directory, and apparently the image also tries to source SQL files there. Moving it to /tmp (and granting USAGE on the schema to standarduser) fixed the problem.