[Unit]
Description=Redis Container
After=docker.service
Requires=docker.service

[Service]
Type=simple
restart=always
TimeoutStartSec=120
ExecStartPre=-/usr/bin/docker pull redis:4-alpine
ExecStartPre=-/usr/bin/docker kill redis_service
ExecStartPre=-/usr/bin/docker rm redis_service
ExecStart=/usr/bin/docker run --name redis_service redis:alpine

ExecStop=/usr/bin/docker stop redis_service

[Install]
WantedBy=multi-user.target