fix: drop EOL Node 20 build so CI is green again

npm@latest (12.x) requires node ^22.22.2 || ^24.15.0 || >=26, so the
`npm i -g npm@latest` step fails on node:20-alpine and fail-fast cancels
every other job. Node 20 reached EOL on 2026-04-30 and its upstream image
is frozen; the published kooldev/node:20 tag stays on Docker Hub as legacy.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: fabriciojs

.github/workflows/ci-cd.yml

@@ -10,7 +10,7 @@ jobs:
   build:
     strategy:
       matrix:
-        version: [20, 22, 24, 24-nginx]
+        version: [22, 24, 24-nginx]
         runs-on: [ubuntu-24.04, ubuntu-24.04-arm]
     runs-on: ${{ matrix.runs-on }}
 
@@ -70,7 +70,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        version: [20, 22, 24, 24-nginx]
+        version: [22, 24, 24-nginx]
 
     steps:
       - uses: docker/login-action@v3

20/Dockerfile

@@ -6,10 +6,6 @@ Minimal [Node](https://nodejs.org/en/) Docker image. It's use is intended for [k
 
 ## Available Tags
 
-### 20
-
-- [20](https://github.com/kool-dev/docker-node/blob/master/20/Dockerfile)
-
 ### 22
 
 - [22](https://github.com/kool-dev/docker-node/blob/master/22/Dockerfile)
@@ -31,6 +27,7 @@ The following images have been discontinued, but still exist on Hub Docker in ca
 - [14](https://github.com/kool-dev/docker-node/tree/legacy-2022-07/14/Dockerfile), [14-qa](https://github.com/kool-dev/docker-node/tree/legacy-2022-07/14-qa/Dockerfile), [14-adonis](https://github.com/kool-dev/docker-node/tree/legacy-2022-07/14-adonis/Dockerfile), [14-adonis-qa](https://github.com/kool-dev/docker-node/tree/legacy-2022-07/14-adonis-qa/Dockerfile), [14-nest](https://github.com/kool-dev/docker-node/tree/legacy-2022-07/14-nest/Dockerfile), [14-nest-qa](https://github.com/kool-dev/docker-node/tree/legacy-2022-07/14-nest-qa/Dockerfile)
 - [16](https://github.com/kool-dev/docker-node/blob/master/16/Dockerfile)
 - [18](https://github.com/kool-dev/docker-node/blob/master/18/Dockerfile)
+- [20](https://github.com/kool-dev/docker-node/blob/37fa7fd/20/Dockerfile)
 - [21](https://github.com/kool-dev/docker-node/blob/master/21/Dockerfile)
 - [22-nginx](https://github.com/kool-dev/docker-node/blob/master/22-nginx/Dockerfile)
 

20/entrypoint

@@ -1,31 +1,6 @@
 {
     "output": ".",
     "builds": [
-        {
-            "name": "20",
-            "data": {
-                "from": "node:20-alpine",
-                "version": "20"
-            },
-            "files": [
-                {
-                    "name": "Dockerfile",
-                    "path": "template/Dockerfile"
-                },
-                {
-                    "name": "entrypoint",
-                    "path": "template/entrypoint"
-                },
-                {
-                    "name": "kool-npmrc",
-                    "path": "template/kool-npmrc"
-                },
-                {
-                    "name": "root-npmrc",
-                    "path": "template/root-npmrc"
-                }
-            ]
-        },
         {
             "name": "22",
             "data": {

20/kool-npmrc

@@ -3,7 +3,6 @@ scripts:
   build:
     # parse templates
     - kool run template
-    - docker build --pull -t kooldev/node:20 20
     - docker build --pull -t kooldev/node:22 22
     - docker build --pull -t kooldev/node:24 24
     - docker build --pull -t kooldev/node:24-nginx 24-nginx