Prebuilt Debian 10 “Buster” packages are available from https://apt.postgresql.org/. You can add this as a repository to your Debian Buster installation and just do the normal routine installing software. Some Elephant Shed components additionally need buster-backports.

Installation on Debian 10 “buster”

# Become superuser
su

# Install tools
apt-get install curl ca-certificates gnupg2

# Use official PostgreSQL repo, apt.postgresql.org
echo "deb http://apt.postgresql.org/pub/repos/apt/ buster-pgdg main" | tee -a /etc/apt/sources.list.d/pgdg.list
curl https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add -

# Use backports repository
echo "deb https://deb.debian.org/debian/ buster-backports main" | tee -a /etc/apt/sources.list.d/backports.list

# Install elephant-shed
apt-get update
apt-get install elephant-shed

# Choose desired PostgreSQL versions to install
apt-get install postgresql-13

# Every user in the group "elephant-shed" is allowed to login at the portal
# Add all needed users to this group
/sbin/adduser <USERNAME> elephant-shed

Notice: The packages contain the Elephant Shed components and some basic configuration. Tuning, user management, and setting up a firewall remain to be done on the user’s side.