Remove default RUBY_VERSION from base image Dockerfile

baelter · baelter · commit 6fcbf1c1e468 · 2026-03-13T14:21:30.000+01:00
The version is always passed as a build arg from the CI matrix.
A default just hides missing args and can go stale.
diff --git a/ruby/Dockerfile b/ruby/Dockerfile
@@ -1,4 +1,4 @@
-ARG RUBY_VERSION=3.4.8
+ARG RUBY_VERSION
 FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim as base
 
 # The app lives here

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-ARG RUBY_VERSION=3.4.8`
	`1`	`+ARG RUBY_VERSION`
`2`	`2`	`FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim as base`
`3`	`3`
`4`	`4`	`# The app lives here`