setup .devcontainer

.devcontainer/Dockerfile

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+# Use a base image with Ubuntu
+FROM mcr.microsoft.com/devcontainers/base:ubuntu
+
+# Install R
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    r-base \
+    r-base-dev \
+    && apt-get clean && rm -rf /var/lib/apt/lists/*
+
+# Set default shell
+SHELL ["/bin/bash", "-c"]

.devcontainer/devcontainer.json

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+{
+  "name": "R Environment",
+  "build": {
+    "dockerfile": "Dockerfile"
+  },
+  "settings": {
+    "terminal.integrated.defaultProfile.linux": "bash"
+  },
+  "extensions": [
+    "Ikuyadeu.r",  // R language support in VS Code
+    "REditorSupport.r-lsp"  // R Language Server
+  ],
+  "postCreateCommand": "Rscript -e 'install.packages(c(\"languageserver\"), repos=\"https://cloud.r-project.org\")'"
+}