.devcontainer: Bump to alpine 3.22 (#340)

Author: mrueg

.devcontainer/Dockerfile

@@ -1,5 +1,5 @@
 # See here for image contents: https://github.com/devcontainers/images/blob/main/src/base-alpine/history/0.210.0.md
 
-# [Choice] Alpine version: 3.19, 3.20, 3.21
-ARG VARIANT="3.21"
-FROM mcr.microsoft.com/devcontainers/base:0-alpine-${VARIANT}
+# [Choice] Alpine version: 3.20, 3.21, 3.22
+ARG VARIANT="3.22"
+FROM mcr.microsoft.com/devcontainers/base:1-alpine-${VARIANT}

.devcontainer/devcontainer.json

@@ -5,8 +5,8 @@
 	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
 	"build": {
 		"dockerfile": "Dockerfile",
-		// Update 'VARIANT' to pick an Alpine version: 3.19, 3.20, 3.21
-		"args": { "VARIANT": "3.21" }
+		// Update 'VARIANT' to pick an Alpine version: 3.20, 3.21, 3.22
+		"args": { "VARIANT": "3.22" }
 	},
 
 	// Features to add to the dev container. More info: https://containers.dev/features.