From 34de8f16bb721385b06ad1a23f0d5233d3ab95bd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thibaut=20Barr=C3=A8re?= <thibaut.barrere@gmail.com>
Date: Fri, 9 Apr 2021 16:50:42 +0200
Subject: [PATCH] Add a Ruby task to easily generate our image name

---
 Rakefile | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 Rakefile

diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..6265732
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,6 @@
+task :get_image_version do
+  version = IO.read("transport-site/Dockerfile")[/FROM (hexpm\/elixir.*)/, 1]
+  version = version.gsub('hexpm/elixir:','elixir-')
+  fail "Unexpected FROM format, script must be verified" unless version =~ /\Aelixir\-[^\-]+\-erlang\-[^\-]+\-alpine\-[^\-]+\z/
+  puts version
+end