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