NestJS and TypeORM fail to connect my local Postgres database. Claims my database does not exist, even tho it does - node.js

Question

I have NestJS application that uses TypeORM to connect to my local database. I create database with shell script:
#!/bin/bash
set -e
SERVER="my_database_server";
PW="mysecretpassword";
DB="my_database";
echo "echo stop & remove old docker [$SERVER] and starting new fresh instance of [$SERVER]"
(docker kill $SERVER || :) && \
(docker rm $SERVER || :) && \
docker run --name $SERVER -e POSTGRES_PASSWORD=$PW \
-e PGPASSWORD=$PW \
-p 5432:5432 \
-d postgres
# wait for pg to start
echo "sleep wait for pg-server [$SERVER] to start";
SLEEP 3;
# create the db
echo "CREATE DATABASE $DB ENCODING 'UTF-8';" | docker exec -i $SERVER psql -U postgres
echo "\l" | docker exec -i $SERVER psql -U postgres
After that, it logs databases:
Then I fire up my application, and I encounter error "error: database "my_database" does not exist"
I use following code to connect to database:
static getDatabaseConnection(): TypeOrmModuleOptions {
console.log(require('dotenv').config())
return {
type: 'postgres',
host: "127.0.0.1",
port: 5432,
username: 'postgres',
password: 'mysecretpassword',
database: 'my_database',
entities: ['dist/**/*.entity{.ts,.js}'],
synchronize: true,
};
}
Any ideas where do I go wrong?

Answer 1

When connecting to a docker instance, you should usually use the service name. In this case I guess it is my_database_server as host parameter.
return {
type: 'postgres',
host: "my_database_server",
port: 5432,
username: 'postgres',
password: 'mysecretpassword',
database: 'my_database',
entities: ['dist/**/*.entity{.ts,.js}'],
synchronize: true,
};

Answer 2

"localhost" isn't address of your docker container. Which address uses docker you can look running command:
$ docker inspect {your_container_name}
for me is: 172.17.0.2
Try enable SSL, adding next configuration lines:
ssl: true,
extra: { ssl: { rejectUnauthorized: false } }

Answer 3

Try using localhost instead of 127.0.0.1