Erro: você deve instalar pelo menos um pacote PostgreSQL-Client-
sudo apt-get install postgresql-client
devops unicorn
sudo apt-get install postgresql-clientsudo apt update
sudo apt -y install vim bash-completion wget
sudo apt -y upgrade
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" | sudo tee /etc/apt/sources.list.d/pgdg.list
sudo apt update
sudo apt -y install postgresql-client-12