Check images

check_image.sh

#!/bin/bash

# Show command before executing
set -x

# Exit on error
set -e

# Check the existence of image on registry.centos.org

IMAGE="mattermost-team"
REGISTRY="https://registry.centos.org"
REPOSITORY="mattermost"
TAG="4.3"

curl -X GET $REGISTRY/v2/$REPOSITORY/$IMAGE/tags/list | grep -w $TAG

if [ $? -eq 0 ]; then
  echo 'CICO: Image existence check successful. Ready to deploy updated app'
  exit 0
else
  echo 'CICO: Image push to registry failed'
  exit 2
fi