Bump Ruby to 3.1.2

EdricChan03 · EdricChan03 · commit d47ebb8763f2 · 2022-10-06T11:13:41.000+08:00
BREAKING CHANGE: This GitHub Action now uses Ruby 3.1.2 by default.
Expect other potential breaking changes.
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.7
+FROM ruby:3.1.2
 
 # Set the default locale so as to not cause issues in Jekyll
 ENV LC_ALL C.UTF-8

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-FROM ruby:2.7`
	`1`	`+FROM ruby:3.1.2`
`2`	`2`
`3`	`3`	`# Set the default locale so as to not cause issues in Jekyll`
`4`	`4`	`ENV LC_ALL C.UTF-8`