[Added] Basis for the project

backend/.devcontainer/Dockerfile

@@ -0,0 +1,15 @@
+# Use an official OpenJDK as a parent image
+FROM openjdk:17-jdk-slim
+
+# Set the working directory
+WORKDIR /app
+
+# Install Maven
+RUN apt-get update && apt-get install -y \
+    maven=3.3.9-4 \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN mvn clean package
+
+CMD ["tail","-f","/dev/null"]

backend/.devcontainer/devcontainer.json

@@ -0,0 +1,23 @@
+{
+  "name": "Quiz Backend",
+  
+  "build": {
+    "context": ".",
+    "dockerfile": "Dockerfile",
+    "args": {
+      "WORKDIR": "/app"
+    }
+  },
+  "runArgs": ["--name=quiz-backend-dev-cont"],
+  "workspaceFolder": "/app",
+  "mounts": [
+    "source=.,target=/app,type=bind"
+  ],
+  "customizations": {
+    "vscode": {
+      "settings": {},
+      "extensions": [
+      ]
+    }
+  }
+}