feat: enabling java function dev experience in vscode + devcontainer

.devcontainer/Dockerfile

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+# Reference: https://github.com/devcontainers/images/blob/main/src/java/.devcontainer/Dockerfile
+ARG TARGET_JAVA_VERSION=21
+ARG BASE_IMAGE_VERSION_CODENAME=bookworm
+FROM mcr.microsoft.com/devcontainers/base:${BASE_IMAGE_VERSION_CODENAME}
+
+USER root
+ARG TARGET_JAVA_VERSION
+ENV JAVA_HOME /usr/lib/jvm/msopenjdk-current
+ENV PATH "${JAVA_HOME}/bin:${PATH}"
+# Default to UTF-8 file.encoding
+ENV LANG en_US.UTF-8
+
+# Install Microsoft OpenJDK
+RUN arch="$(dpkg --print-architecture)" \
+	&& case "$arch" in \
+		"amd64") \
+			jdkUrl="https://aka.ms/download-jdk/microsoft-jdk-${TARGET_JAVA_VERSION}-linux-x64.tar.gz"; \
+			;; \
+		"arm64") \
+			jdkUrl="https://aka.ms/download-jdk/microsoft-jdk-${TARGET_JAVA_VERSION}-linux-aarch64.tar.gz"; \
+			;; \
+		*) echo >&2 "error: unsupported architecture: '$arch'"; exit 1 ;; \
+	esac \
+	\
+	&& wget --progress=dot:giga -O msopenjdk.tar.gz "${jdkUrl}" \
+	&& wget --progress=dot:giga -O sha256sum.txt "${jdkUrl}.sha256sum.txt" \
+	\
+	&& sha256sumText=$(cat sha256sum.txt) \
+	&& sha256=$(expr substr "${sha256sumText}" 1 64) \
+	&& echo "${sha256} msopenjdk.tar.gz" | sha256sum --strict --check - \
+	&& rm sha256sum.txt* \
+	\
+	&& mkdir -p "$JAVA_HOME" \
+	&& tar --extract \
+		--file msopenjdk.tar.gz \
+		--directory "$JAVA_HOME" \
+		--strip-components 1 \
+		--no-same-owner \
+	&& rm msopenjdk.tar.gz* \
+	\
+	&& ln -s ${JAVA_HOME} /docker-java-home \
+	&& ln -s ${JAVA_HOME} /usr/local/openjdk-${TARGET_JAVA_VERSION}
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
+
+
+# Install Maven
+RUN apt-get update && apt-get install -y maven
+
+# Install coretools package from linux software repository
+RUN curl -sSL -O https://packages.microsoft.com/config/debian/12/packages-microsoft-prod.deb \
+    && dpkg -i packages-microsoft-prod.deb \
+    && rm packages-microsoft-prod.deb \
+    && apt-get update && apt-get install azure-functions-core-tools-4

.devcontainer/devcontainer.json

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+{
+    "name": "Azure Java Function Worker Development",
+    "build": {
+        "dockerfile": "./Dockerfile",
+        "context": "."
+    },
+    "features": {
+        "ghcr.io/devcontainers/features/java:1": {
+            "version": "none"
+        },
+        "ghcr.io/devcontainers/features/node:1": "none",
+        "ghcr.io/devcontainers/features/git:1": {
+            "version": "latest",
+            "ppa": "false"
+        }
+    },
+    "containerEnv": {
+        "JAVA_HOME": "/usr/lib/jvm/msopenjdk-current"
+    },
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "vscjava.vscode-java-pack",        // Java extension pack for VS Code
+                "vscjava.vscode-java-debug",        // Java debug extension
+                "vscjava.vscode-maven",            // Maven extension for VS Code
+                "ms-azuretools.vscode-azurefunctions",  // Azure Functions extension
+                "ms-azuretools.vscode-azurestorage",  // Azure Storage,
+                "Azurite.azurite"  // Azurite extension
+            ]
+        }
+    }
+}