install-postgres.sh

#!/bin/bash
source ./.env


declare -r PGV=$(apt-cache policy postgresql-$VERSION | grep -e Installed: | cut -d' ' -f4)
if ! [[ -z "$PGV" ]] && ! [[ $PGV == "(none)" ]]; then
    echo "Error Postgres already installed"
    exit
fi


# Import the repository signing key:
apt install curl ca-certificates
install -d /usr/share/postgresql-common/pgdg
curl -o /usr/share/postgresql-common/pgdg/apt.postgresql.org.asc --fail https://www.postgresql.org/media/keys/ACCC4CF8.asc

# Create the repository configuration file:
sh -c 'echo "deb [signed-by=/usr/share/postgresql-common/pgdg/apt.postgresql.org.asc] https://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'

# Update the package lists:
apt update

# Install the latest version of PostgreSQL:
# If you want a specific version, use 'postgresql-16' or similar instead of 'postgresql'
apt -y install postgresql-$VERSION