multi version support

.devcontainer/devcontainer-java-latest.json

+{
+    "name": "Java 8 Development Environment",
+    "image": "hb.eazytec-cloud.com/eazytec/eazydevelop-base:ubuntu",
+    "features": {
+        "./java": {
+            "version": "latest",
+            "installMaven": true
+        },
+        "ghcr.io/devcontainers/features/common-utils:2": {
+            "installZsh": true,
+            "configureZshAsDefaultShell": true,
+            "installOhMyZsh": true,
+            "upgradePackages": true
+        }
+    },
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "vscjava.vscode-java-pack",
+                "vscjava.vscode-maven",
+                "vscjava.vscode-gradle",
+                "redhat.java",
+                "vscjava.vscode-java-debug",
+                "vscjava.vscode-java-test"
+            ],
+            "settings": {
+                "java.home": "/usr/local/openjdk-8",
+                "java.configuration.updateBuildConfiguration": "automatic",
+                "java.compile.nullAnalysis.mode": "automatic"
+            }
+        }
+    },
+    "postCreateCommand": "java -version && mvn -version && gradle -version",
+    "remoteUser": "vscode"
+}