update_docker_image.sh.erb
No OneTemporary
Actions

Size

667 B

Subscribers

None

update_docker_image.sh.erb
View Options

	#!/bin/bash
	#
	# Pulls a docker image.
	# Returns 0 if there a change.
	# Returns 2 if there is no change.
	# Returns 3 if something when wrong.
	#
	DOCKER_IMAGE=$1

	BEFORE=$(docker inspect --type image --format='{{.Id}}' ${DOCKER_IMAGE} 2>/dev/null)
	<%= @docker_command -%> pull ${DOCKER_IMAGE}
	AFTER=$(docker inspect --type image --format='{{.Id}}' ${DOCKER_IMAGE} 2>/dev/null)

	if [[ -z $AFTER ]]; then
	echo "Docker image ${DOCKER_IMAGE} failed to pull!"
	exit 3
	elif [[ $BEFORE == $AFTER ]]; then
	echo "No updates to ${DOCKER_IMAGE} available. Currently on ${AFTER}."
	exit 2
	else
	echo "${DOCKER_IMAGE} updated. Changed from ${BEFORE} to ${AFTER}."
	exit 0
	fi