Problems to install Indico in CentOS 6 (Step 7 of Installation Guide)

I am stuck at this step here that is documented for Indico Installation in Cent OS 7. My server uses CentOS 6.4.

Link where the steps are: https://docs.getindico.io/en/latest/installation/production/centos/nginx/

## 7. Install Indico

Celery runs as a background daemon. Add a systemd unit file for it:

cat > /etc/systemd/system/indico-celery.service <<'EOF'

[Unit]
Description=Indico Celery
After=network.target

[Service]
ExecStart=/opt/indico/.venv/bin/indico celery worker -B
Restart=always
SyslogIdentifier=indico-celery
User=indico
Group=nginx
UMask=0027
Type=simple
KillMode=mixed
TimeoutStopSec=300

[Install]
WantedBy=multi-user.target
EOF
systemctl daemon-reload

Can someone help me create this file in CentOS6.4 ?

CentOS 6 isn’t supported. AFAIK it doesn’t even come with Python 2.7.