Handle JAVA_HOME varying between base image versions

.devcontainer/Dockerfile

@@ -22,5 +22,8 @@ RUN apt-get autoremove -y \
     && rm -rf /var/lib/apt/lists/*
 ENV DEBIAN_FRONTEND=dialog
 
+# Allow for a consistant java home location for settings - image is changing over time
+RUN if [ ! -d "/docker-java-home" ]; then ln -s "${JAVA_HOME}" /docker-java-home; fi
+
 # Set the default shell to bash rather than sh
 ENV SHELL /bin/bash

.devcontainer/devcontainer.json

@@ -4,5 +4,8 @@
 	"extensions": [
 		"vscjava.vscode-java-pack",
 		"redhat.vscode-xml"
-	]
+	],
+	"settings":{
+		"java.home": "/docker-java-home"
+	}
 }

.devcontainer/settings.vscode.json

@@ -1,3 +1,3 @@
 {
-    "java.home": "/usr/local/openjdk-8"
+    "java.home": "/docker-java-home"
 }