update devcontainer

.devcontainer/devcontainer.json

@@ -1,43 +1,40 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/java
 {
-	"name": "Java PLUS Docker from Docker",
-	"build": {
-		"dockerfile": "Dockerfile",
-		"args": {
-			// Update the VARIANT arg to pick a Java version: 11, 14
-			"VARIANT": "17",
-			// Options
-			"INSTALL_MAVEN": "true",
-			"INSTALL_GRADLE": "false",
-			"INSTALL_NODE": "false",
-			"NODE_VERSION": "lts/*"
+	"name": "Java",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "mcr.microsoft.com/devcontainers/java:1-21",
+
+	"features": {
+		"ghcr.io/devcontainers/features/java:1": {
+			"version": "none",
+			"installMaven": "true",
+			"mavenVersion": "3.9.9",
+			"installGradle": "false"
+		},
+		"ghcr.io/devcontainers/features/docker-in-docker:2": {
+			"version": "latest",
+			"moby": true
 		}
 	},
-	"runArgs": [
-		"--init"
-	],
-	"mounts": [
-		"source=/var/run/docker.sock,target=/var/run/docker-host.sock,type=bind"
-	],
-	// Use this environment variable if you need to bind mount your local source code into a new container.
-	"remoteEnv": {
-		"LOCAL_WORKSPACE_FOLDER": "${localWorkspaceFolder}"
-	},
-	// Set *default* container specific settings.json values on container create.
-	"settings": {
-		"java.home": "/docker-java-home",
-		"maven.executable.path": "/usr/local/sdkman/candidates/maven/current/bin/mvn"
+
+	// Configure tool-specific properties.
+	"customizations": {
+		// Configure properties specific to VS Code.
+		"vscode": {
+			"settings": {},
+			"extensions": [
+				"streetsidesoftware.code-spell-checker"
+			]
+		}
 	},
-	// Add the IDs of extensions you want installed when the container is created.
-	"extensions": [
-		"ms-azuretools.vscode-docker",
-		"vscjava.vscode-java-pack"
-	]
+
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
 	// "forwardPorts": [],
+
 	// Use 'postCreateCommand' to run commands after the container is created.
-	// "postCreateCommand": "docker --version",
-	// Uncomment the next two lines to connect as a non-root user. See https://aka.ms/vscode-remote/containers/non-root.
-	,
-	"overrideCommand": false,
-	"remoteUser": "vscode"
+	"postCreateCommand": "mvn --version"
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
 }