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docker.rb
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docker.rb
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#!/usr/bin/env ruby
require "childprocess"
require "toml"
ARGV.first&.split(".") || []
class String
def int?
/^\d+$/.match?(self)
end
end
DockerError = Class.new(StandardError)
class InvalidVersion < StandardError
def initialize
super("Requires version of format x.y.z")
end
end
def validate_version(version)
semver = version&.split(".")
raise InvalidVersion unless semver&.size == 3
raise InvalidVersion unless semver&.all?(&:int?)
return semver.map.with_index { |v, i| semver[0..i].join(".") }
end
def docker(*args)
process = ChildProcess.build("docker", *args).tap do |p|
p.io.inherit!
p.start
p.wait
end
raise DockerError unless process.exit_code.zero?
end
def docker_build(image_name, versions)
tags = versions.flat_map { |v| ["-t", "#{image_name}:#{v}"] }
puts "Building #{versions.size} images..."
docker "build", *tags, "."
end
def docker_push(image_name, versions)
puts "Pushing #{versions.size} images to #{image_name}"
versions.each do |version|
docker "push", "#{image_name}:#{version}"
end
end
version = TOML.load_file("Cargo.toml").dig("package", "version")
image_name = "registry.gitlab.com/valeth/javelin"
begin
versions = ["latest", *validate_version(version)]
docker_build(image_name, versions)
docker_push(image_name, versions)
rescue InvalidVersion, DockerError => e
warn e.message
exit 1
end