Docker - How can run the psql command in the postgres container?

Question

I would like to use the psql in the postgres image in order to run some queries on the database. But unfortunately when I attach to the postgres container, I got that error

Answer 1

You can enter inside the postgres container using docker-compose by typing the following

docker-compose exec postgres bash

knowing that postgres is the name of the service. Replace it with the name of the Postgresql service in you docker-compose file.

if you have many docker-compose files, you have to add the specific docker-compose.yml file you want to execute the command with. Use the following commnand instead.

docker-compose -f < specific docker-compose.yml> exec postgres bash

For example if you want to run the command with a docker-compose file called local.yml, here the command will be

docker-compose -f local.yml exec postgres bash

Then, use psql command and specify the database name with the -d flag and the username with the -U flag

psql -U  -d 

Baammm!!!!! you are in.