Add support for alpine 3.23

src/base-alpine/.devcontainer/Dockerfile

@@ -1,2 +1,2 @@
-ARG VARIANT=3.22
+ARG VARIANT=3.23
 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-3.22, alpine-3.21, alpine-3.20 ([full list](https://mcr.microsoft.com/v2/devcontainers/base/tags/list)) |
+| *Available image variants* | alpine-3.23, alpine-3.22, alpine-3.21, alpine-3.20 ([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 |
@@ -23,6 +23,7 @@ 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-3.23`
 - `mcr.microsoft.com/devcontainers/base:alpine-3.22`
 - `mcr.microsoft.com/devcontainers/base:alpine-3.21`
 - `mcr.microsoft.com/devcontainers/base:alpine-3.20`
@@ -32,9 +33,9 @@ Refer to [this guide](https://containers.dev/guide/dockerfile) for more details.
 
 You can decide how often you want updates by referencing a [semantic version](https://semver.org/) of each image. For example:
 
-- `mcr.microsoft.com/devcontainers/base:1-alpine`
-- `mcr.microsoft.com/devcontainers/base:1.1-alpine`
-- `mcr.microsoft.com/devcontainers/base:1.1.0-alpine`
+- `mcr.microsoft.com/devcontainers/base:3-alpine`
+- `mcr.microsoft.com/devcontainers/base:3.0-alpine`
+- `mcr.microsoft.com/devcontainers/base:3.0.0-alpine`
 
 See [history](history) for information on the contents of each version and [here for a complete list of available tags](https://mcr.microsoft.com/v2/devcontainers/base/tags/list).
 

src/base-alpine/manifest.json

@@ -1,6 +1,8 @@
 {
-	"version": "2.0.3",
+	"version": "3.0.0",
 	"variants": [
+		"latest",
+		"3.23",
 		"3.22",
 		"3.21",		
 		"3.20"	
@@ -16,7 +18,7 @@
 			"base:${VERSION}-alpine${VARIANT}"
 		],
 		"variantTags": {
-			"3.22": [
+			"3.23": [
 				"base:${VERSION}-alpine"
 			]
 		}