[Unit] Description=Backup PostgreSQL databases [Service] Type=oneshot ExecStart=/usr/local/bin/postgresql-backup.sh EnvironmentFile=/etc/postgresql/secrets.env EnvironmentFile=/etc/postgresql/postgresql.env Environment=BACKUP_DIR=/srv/postgresql/backups Environment=POSTGRES_HOST=systemd-postgresql ExecStartPre=/usr/bin/mkdir -p $BACKUP_DIR ExecStart=/usr/bin/podman run --rm --network systemd-main -v $BACKUP_DIR:/backups:z docker.io/library/postgres:17.4 pg_dumpall -U $POSTGRES_USER -h $POSTGRES_HOST -p $POSTGRES_PORT -f /backups/$(date +'%Y-%m-%d_%H-%M-%S').sql