Support for Alpine 3.22 (devcontainers#1473)

* EOL changes to alpine(3.18)

* support for alpine 3.22

* Revert "EOL changes to alpine(3.18)"

This reverts commit cc4b22b.

* Update README.md

* bump up the version

* bump up the version

* version update

---------

Co-authored-by: Álvaro Rausell Guiard <33221237+AlvaroRausell@users.noreply.github.com>

Author: sireeshajonnalagadda

src/base-alpine/.devcontainer/Dockerfile

@@ -1,2 +1,2 @@
-ARG VARIANT=3.21
+ARG VARIANT=3.22
 FROM alpine:${VARIANT}

src/base-alpine/README.md

@@ -9,7 +9,7 @@
 | *Categories* | Core, Other |
 | *Image type* | Dockerfile |
 | *Published images* | mcr.microsoft.com/devcontainers/base:alpine |
-| *Available image variants* | alpine-3.21, alpine-3.20, alpine-3.19, alpine-3.18 ([full list](https://mcr.microsoft.com/v2/devcontainers/base/tags/list)) |
+| *Available image variants* | alpine-3.22, alpine-3.21, alpine-3.20, alpine-3.19 ([full list](https://mcr.microsoft.com/v2/devcontainers/base/tags/list)) |
 | *Published image architecture(s)* | x86-64, aarch64/arm64 |
 | *Container host OS support* | Linux, macOS, Windows |
 | *Container OS* | Alpine Linux |
@@ -22,10 +22,11 @@ See **[history](history)** for information on the contents of published images.
 You can also directly reference pre-built versions of `.devcontainer/Dockerfile` by using the `image` property in `.devcontainer/devcontainer.json` or updating the `FROM` statement in your own  `Dockerfile` to one of the following. An example `Dockerfile` is included in this repository.
 
 - `mcr.microsoft.com/devcontainers/base:alpine` (latest)
+- `mcr.microsoft.com/devcontainers/base:alpine-3.22`
 - `mcr.microsoft.com/devcontainers/base:alpine-3.21`
 - `mcr.microsoft.com/devcontainers/base:alpine-3.20`
 - `mcr.microsoft.com/devcontainers/base:alpine-3.19`
-- `mcr.microsoft.com/devcontainers/base:alpine-3.18`
+
 
 Refer to [this guide](https://containers.dev/guide/dockerfile) for more details.
 

src/base-alpine/manifest.json

@@ -1,10 +1,10 @@
 {
-	"version": "0.210.5",
+	"version": "1.0.0",
 	"variants": [
+		"3.22",
 		"3.21",		
 		"3.20",
-		"3.19",
-		"3.18"
+		"3.19"	
 	],
 	"build": {
 		"latest": false,
@@ -18,7 +18,7 @@
 			"base:${VERSION}-alpine${VARIANT}"
 		],
 		"variantTags": {
-			"3.21": [
+			"3.22": [
 				"base:${VERSION}-alpine"
 			]
 		}