Install script doesn't work

[zooool]

Whether I create a postgres user without a password, a postgres user with a password, or use the name of a non-existent postgres user, I always get the error:

./setup.sh name
Creating postgres database
createdb: error: could not connect to database template1: FATAL:  Peer authentication failed for user "name"
Creating table scheme
psql: error: FATAL:  Peer authentication failed for user "name"
Success

[zooool]

It was a PostgreSQL problem. Solved using the information here: https://stackoverflow.com/questions/18664074