.sql file in docker-entrypoint-initdb not being run - postgresql

Question

I am using docker-compose 3.7 to run Postgresql but I can't get my init.sql to run through the docker-entrypoint-initdb.d entry point.
I understand that the volume directory on my machine needs to be empty but I am sure that I am doing that correctly. I must be missing something fairly simple/obvious.
version: '3.7'
services:
postgresdb:
environment:
POSTGRES_DB: appdb
POSTGRES_USER: appdb
POSTGRES_PASSWORD: ########
image: bitnami/postgresql:latest
ports:
- "5432:5432"
volumes:
- ./db/postgres_volume:/bitnami:rw
- ./db/init.sql:/docker-entrypoint-initdb.d/init.sql
restart: always
CREATE TABLE user (
id SERIAL NOT NULL PRIMARY KEY,
name VARCHAR(255) NOT NULL
);
My volume directory is empty.
$ ls db/postgres_volume/
$
The container starts with no issues but from the logs, I can't tell if the init.sql script was executed. Scripts seemed to be loaded but I am not sure about execution.
$ docker-compose -f docker-compose.yml up -d postgresdb
Creating network "app_default" with the default driver
Creating app_postgresdb_1 ... done
$
postgresdb_1 | INFO ==> Loading custom scripts...
postgresdb_1 | INFO ==> Loading user's custom files from /docker-entrypoint-initdb.d ...
postgresdb_1 | INFO ==> Starting PostgreSQL in background...
Logging into the container and then into my database, I see no tables.
$ docker exec -it 737845344cf2 bash
I have no name!#737845344cf2:/$ psql -U appdb appdb
appdb=> \dt
Did not find any relations.
After the container is created, I see a "postgresql" folder db/postgres_volume but is has no contents.
$ ls db/postgres_volume/
postgresql
$ ls db/postgres_volume/postgresql/
$

Answer 1

First thing, It will never create a table because you are using reserve word user in table creation. change the user to "user"
CREATE TABLE "user"(
user_id serial PRIMARY KEY,
username VARCHAR (50) UNIQUE NOT NULL
)
Second thing, The above will work fine with initialization the DB but there is a mounting issue in the lastest image that might be the reason that the mount directory seemed empty.
Also in the documentation, the path is -v /path/to/postgresql-persistence:/bitnami/postgresql Persisting your database