update devcontainer

Author: Katsute

.devcontainer/devcontainer.json

@@ -1,4 +1,18 @@
 {
-    "name": "Java",
-    "image": "maven:3.8.6-eclipse-temurin-17"
+    "image": "maven:3-eclipse-temurin-17",
+    "onCreateCommand": "mvn compile",
+    "shutdownAction": "stopContainer",
+	"forwardPorts": [
+		8080
+	],
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"vscjava.vscode-java-dependency",
+				"vscjava.vscode-java-debug",
+				"vscjava.vscode-maven",
+				"redhat.java"
+			]
+		}
+	}
 }