update_production_service.sh

#!/bin/bash
##
## Usage update_production service [image]
##
## Arguments:
## service: carnival-sidekiq. '-production' will be added automatically
## image:   redis:latest. Can be empty, in this case image = service:latest
##
##

if [ -z $2 ]; then
    $IMAGE = $1:latest
else
    $IMAGE = $2
fi

SERVICE   = $1-production.service
# Check if there is a container with the same name in state Exited
CONTIANER = $(sudo docker ps -a | grep $SERVICE | grep 'Exited')
echo $CONTAINER

# Pull image
sudo docker pull $IMAGE

# Remove dead container
if [ -n $CONTAINER ]; then
    sudo docker rm $SERVICE
fi

# Restart service
sudo systemctl restart $SERVICE

# Clean dangling images
sudo docker rmi $(sudo docker images -q -f 'dangling=true')