Partially executed init.sql - mysql

Question

I am setting up a dev environment based on docker-compose for a simple tool that needs just a table with a few columns. I can successfully build the image with the followting docker-compose.yml file.
services:
# [main service...]
mysql:
image: mysql:latest
container_name: feedback_db
volumes:
- "./init_db.sql:/docker-entrypoint-initdb.d/init_db.sql"
- "./mysql:/var/lib/mysql"
environment:
- MYSQL_ROOT_PASSWORD=testing
- MYSQL_DATABASE=feedback
- MYSQL_USER=db_user
- MYSQL_PASSWORD=password
ports:
- '3306:3306'
expose:
- '3306'
restart: on-failure
network_mode: host
volumes:
mysql:
Using the following init_db.sql commands:
-- create db if missing
CREATE DATABASE IF NOT EXISTS feedback;
-- create table
USE feedback;
CREATE TABLE user_feedback (
id INT NOT NULL AUTO_INCREMENT,
session_id VARCHAR(250),
ts TIMESTAMP,
content VARCHAR(250),
feedback VARCHAR(250),
PRIMARY KEY (id)
);
Now, everything gets built perrfectly and although the db gets created as per the init commands, the table creation part doesn't gets executed. The command works perfectly when executed manually inside the container.

Answer 1

I managed to solve the problem, writing an answer here as it might be helpful for other people with similar problem.
As #David correctly spotted, init_db.sql wasn't getting executed at all as docker-entrypoint-initdb.d expects to be mapped to a folder and not to a specific file as I was doing.
Putting init_db.sql file into a ./ìnit_db folder gets the job done:
mysql:
image: mysql:latest
container_name: feedback_db
command: mysqld --default-authentication-plugin=mysql_native_password
volumes:
- "./dev/init_db:/docker-entrypoint-initdb.d" # change: map to folder
- "./mysql:/var/lib/mysql"
environment:
- MYSQL_ROOT_PASSWORD=testing
- MYSQL_DATABASE=feedback
- MYSQL_USER=db_user
- MYSQL_PASSWORD=password
ports:
- '3306:3306'
expose:
- '3306'
restart: on-failure
network_mode: host
There's no need to create the database in my init_db.sql file as that will be taken care of by docker-compose. init_db.sql can be reworked into:
-- create table
USE feedback;
CREATE TABLE IF NOT EXISTS user_feedback (
id INT NOT NULL AUTO_INCREMENT,
session_id VARCHAR(250),
ts TIMESTAMP,
content VARCHAR(250),
feedback VARCHAR(250),
PRIMARY KEY (id)
);