Add Alpine 3.18 variant

Also remove Alpine 3.16

Author: jnoordsij

16/alpine3.16/Dockerfile renamed to 16/alpine3.18/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.16
+FROM alpine:3.18
 
 ENV NODE_VERSION 16.20.0
 

16/alpine3.16/docker-entrypoint.sh renamed to 16/alpine3.18/docker-entrypoint.sh

@@ -1,4 +1,4 @@
-FROM alpine:3.16
+FROM alpine:3.18
 
 ENV NODE_VERSION 18.16.0
 

18/alpine3.16/Dockerfile renamed to 18/alpine3.18/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.16
+FROM alpine:3.18
 
 ENV NODE_VERSION 19.9.0
 

18/alpine3.16/docker-entrypoint.sh renamed to 18/alpine3.18/docker-entrypoint.sh

@@ -1,4 +1,4 @@
-FROM alpine:3.16
+FROM alpine:3.18
 
 ENV NODE_VERSION 20.2.0
 

19/alpine3.16/Dockerfile renamed to 19/alpine3.18/Dockerfile

@@ -1,8 +1,8 @@
 bashbrew-arch  variants
-amd64          alpine3.16,alpine3.17,bullseye,bullseye-slim,buster,buster-slim
-arm32v6        alpine3.16,alpine3.17
-arm32v7        alpine3.16,alpine3.17,bullseye,bullseye-slim,buster,buster-slim
-arm64v8        alpine3.16,alpine3.17,bullseye,bullseye-slim,buster,buster-slim
-i386           alpine3.16,alpine3.17
-ppc64le        alpine3.16,alpine3.17,bullseye,bullseye-slim,buster,buster-slim
-s390x          alpine3.16,alpine3.17,bullseye,bullseye-slim,buster,buster-slim
+amd64          alpine3.17,alpine3.18,bullseye,bullseye-slim,buster,buster-slim
+arm32v6        alpine3.17,alpine3.18
+arm32v7        alpine3.17,alpine3.18,bullseye,bullseye-slim,buster,buster-slim
+arm64v8        alpine3.17,alpine3.18,bullseye,bullseye-slim,buster,buster-slim
+i386           alpine3.17,alpine3.18
+ppc64le        alpine3.17,alpine3.18,bullseye,bullseye-slim,buster,buster-slim
+s390x          alpine3.17,alpine3.18,bullseye,bullseye-slim,buster,buster-slim

19/alpine3.16/docker-entrypoint.sh renamed to 19/alpine3.18/docker-entrypoint.sh

@@ -1,4 +1,4 @@
 baseuri     https://nodejs.org/dist
 default_variant bullseye
-alpine_version  3.17
+alpine_version  3.18
 debian_versions stretch bullseye buster

20/alpine3.16/Dockerfile renamed to 20/alpine3.18/Dockerfile

@@ -5,18 +5,18 @@
     "maintenance": "2024-10-22",
     "end": "2026-04-30",
     "codename": "",
-    "alpine-default": "alpine3.17",
+    "alpine-default": "alpine3.18",
     "debian-default": "bullseye",
     "variants": {
-      "alpine3.16": [
+      "alpine3.17": [
         "amd64",
         "arm32v6",
         "arm32v7",
         "arm64v8",
         "ppc64le",
         "s390x"
       ],
-      "alpine3.17": [
+      "alpine3.18": [
         "amd64",
         "arm32v6",
         "arm32v7",
@@ -56,18 +56,18 @@
     "maintenance": "2023-04-01",
     "end": "2023-06-01",
     "codename": "",
-    "alpine-default": "alpine3.17",
+    "alpine-default": "alpine3.18",
     "debian-default": "bullseye",
     "variants": {
-      "alpine3.16": [
+      "alpine3.17": [
         "amd64",
         "arm32v6",
         "arm32v7",
         "arm64v8",
         "ppc64le",
         "s390x"
       ],
-      "alpine3.17": [
+      "alpine3.18": [
         "amd64",
         "arm32v6",
         "arm32v7",
@@ -107,18 +107,18 @@
     "maintenance": "2023-10-18",
     "end": "2025-04-30",
     "codename": "hydrogen",
-    "alpine-default": "alpine3.17",
+    "alpine-default": "alpine3.18",
     "debian-default": "bullseye",
     "variants": {
-      "alpine3.16": [
+      "alpine3.17": [
         "amd64",
         "arm32v6",
         "arm32v7",
         "arm64v8",
         "ppc64le",
         "s390x"
       ],
-      "alpine3.17": [
+      "alpine3.18": [
         "amd64",
         "arm32v6",
         "arm32v7",
@@ -158,18 +158,18 @@
     "maintenance": "2022-10-18",
     "end": "2024-04-30",
     "codename": "gallium",
-    "alpine-default": "alpine3.17",
+    "alpine-default": "alpine3.18",
     "debian-default": "buster",
     "variants": {
-      "alpine3.16": [
+      "alpine3.17": [
         "amd64",
         "arm32v6",
         "arm32v7",
         "arm64v8",
         "ppc64le",
         "s390x"
       ],
-      "alpine3.17": [
+      "alpine3.18": [
         "amd64",
         "arm32v6",
         "arm32v7",