What do you see when you open "
" on that machine? The browser part works?
"Now I need some guidance on the "mount
migrations.sql on the same way as schema.sql" part and then where/how to "open postgres docker console and run: psql -U postgres -d postgres -f /migrations.sql". I appreciate your patience."
To get into the docker container-- try
docker exec -it app-1 bash
That should get you into the containers where you can run commands. However, you might want to run these commands in the db-1 container.