From 92aece5fc9c784ab66851c1e702b1bd5885a51f2 Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@ruby-lang.org>
Date: Thu, 23 Feb 2023 07:19:39 +0900
Subject: [PATCH] Also removed deprecated ubuntu-18.04

---
 .github/workflows/test.yml | 2 +-
 README.md                  | 2 +-
 common.js                  | 1 -
 dist/index.js              | 1 -
 4 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9431c07..26a79a3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-18.04, ubuntu-20.04, ubuntu-22.04, macos-11, macos-12, windows-2019, windows-2022 ]
+        os: [ ubuntu-20.04, ubuntu-22.04, macos-11, macos-12, windows-2019, windows-2022 ]
         ruby: [
           '1.9', '2.0', '2.1', '2.2', '2.3', '2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2', ruby-head,
           jruby, jruby-head,
diff --git a/README.md b/README.md
index 2a41184..6184b9b 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ The action works on these [GitHub-hosted runners](https://docs.github.com/en/act
 
 | Operating System | Supported |
 | ---------------- | --------- |
-| Ubuntu  | `ubuntu-18.04`, `ubuntu-20.04`, `ubuntu-22.04` |
+| Ubuntu  | `ubuntu-20.04`, `ubuntu-22.04` |
 | macOS   | `macos-11`, `macos-12` |
 | Windows | `windows-2019`, `windows-2022` |
 
diff --git a/common.js b/common.js
index 9a8a3d3..92843aa 100644
--- a/common.js
+++ b/common.js
@@ -160,7 +160,6 @@ function getImageOS() {
 }
 
 export const supportedPlatforms = [
-  'ubuntu-18.04',
   'ubuntu-20.04',
   'ubuntu-22.04',
   'macos-11',
diff --git a/dist/index.js b/dist/index.js
index ff60f92..5f5f15e 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -468,7 +468,6 @@ function getImageOS() {
 }
 
 const supportedPlatforms = [
-  'ubuntu-18.04',
   'ubuntu-20.04',
   'ubuntu-22.04',
   'macos-11',