abra/bin/app-version.sh

#!/bin/bash

# Usage: ./app-version.sh <image> <service>
# Example: ./app-version.sh drone/drone:1.10.1 app
#
# Accepts a full format hub.docker.com image tag which it pulls locally and
# generates output which can be used to put in the abra.sh for app packaging.
# Requires the yq program https://mikefarah.gitbook.io/yq/

error() {
  echo "$(tput setaf 1)ERROR: $*$(tput sgr0)"
  exit 1
}

IMAGE="$1"
SERVICE="$2"

if ! docker pull -q "$IMAGE" > /dev/null 2>&1; then
	error "Failed to download image, is the tag correct?"
fi

version=$(echo "$IMAGE" | cut -d ':' -f2)
digest=$(docker image inspect -f "{{.Id}}" "$IMAGE" | cut -d ':' -f2- | cut -c 1-8)

echo "--- Add the following to your abra.sh ---"
echo "export ABRA_TYPE_${SERVICE^^}_VERSION=${version}"
echo "export ABRA_TYPE_${SERVICE^^}_DIGEST=${digest}"

version_lookup="ABRA_TYPE_${SERVICE^^}_VERSION"
digest_lookup="ABRA_TYPE_${SERVICE^^}_DIGEST"

label='- "coop-cloud.${STACK_NAME}.'
label+="${SERVICE}"
label+='.version=${'
label+="${version_lookup}"
label+='}-${'
label+="${digest_lookup}"
label+='}"'

echo
echo "--- And don't forget to label the actual service in the compose file ---"
echo "$label"