Bash Script for automated docker container updates

docker-compose-update.sh

#!/bin/bash

email="email@domain.com"

# All work done inside body variable to avoid unnecessary writes to disk for raspi
body="Start: $(date)
Checking for new images...
$(/bin/docker-compose -f /path/to/docker-compose.yml pull --no-parallel 2>&1)

Updating changed containers...
$(/bin/docker-compose -f /path/to/docker-compose.yml up -d 2>&1)
End $(date)"

# Only send email if a container was updated/restarted
if [[ ${body} == *"Recreating"* ]]; then
  echo "${body}" | mail -s "Docker Updates Completed" ${email}
fi