Refactor devcontainer setup and enhance R support

.github/workflows/build-devcontainer.yml

@@ -12,6 +12,7 @@ on:
       - main
     paths:
       - '.devcontainer/**'
+      - '.github/workflows/build-devcontainer.yml'
   workflow_dispatch:
 
 env:
@@ -31,6 +32,16 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Read VSCODE_COMMIT from devcontainer.json
+        id: vscode-commit
+        run: |
+          VSCODE_COMMIT=$(grep 'VSCODE_COMMIT' .devcontainer/devcontainer.json | tr -d '"' | cut -d " " -f 2)
+          VSCODE_SHORT=${VSCODE_COMMIT:0:7}
+          echo "vscode_commit=$VSCODE_COMMIT" >> $GITHUB_OUTPUT
+          echo "vscode_short=$VSCODE_SHORT" >> $GITHUB_OUTPUT
+          echo "Full VSCODE_COMMIT: $VSCODE_COMMIT"
+          echo "Short VSCODE_COMMIT: $VSCODE_SHORT"
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
@@ -52,6 +63,8 @@ jobs:
             type=ref,event=tag
             type=sha,prefix={{branch}}-,enable={{is_default_branch}}
             type=raw,value=latest,enable={{is_default_branch}}
+            type=raw,value=vscode-${{ steps.vscode-commit.outputs.vscode_short }}
+            type=raw,value=vscode-${{ steps.vscode-commit.outputs.vscode_short }}-{{sha}}
 
       - name: Extract tag names only
         id: tags
@@ -136,6 +149,8 @@ jobs:
           echo "🏷️ Image: ${{ env.IMAGE_NAME }}"
           echo "🆔 Tags: ${{ steps.meta.outputs.tags }}"
           echo "📝 Labels: ${{ steps.meta.outputs.labels }}"
+          echo "🔧 VSCode Commit: ${{ steps.vscode-commit.outputs.vscode_commit }}"
+          echo "📋 Short Commit: ${{ steps.vscode-commit.outputs.vscode_short }}"
           echo ""
           echo "To use this dev container:"
           echo "1. Reference it in your devcontainer.json:"

README.md

@@ -19,6 +19,8 @@ This dev container is automatically built and published to GitHub Container Regi
   - `main` - Latest build from main branch  
   - `main-<commit-sha>` - Specific commit builds from main branch
   - `pr-<number>` - Pull request builds for testing
+  - `vscode-<vscode-commit-sha>` - Builds with specific VS Code versions
+  - `vscode-<vscode-commit-sha>-<commit-sha>` - Combination of VS Code and git commit
 
 **Recommended**: Use `latest` for stable deployments or `main-<commit-sha>` for reproducible builds.
 
@@ -64,6 +66,7 @@ This includes:
 
 - **Base**: Ubuntu 24.04 (Noble) via Microsoft's devcontainers base image
 - **Python**: System Python with development tools (via devcontainer feature)
+- **R**: Full R language support with development tools (via Rocker Project devcontainer feature)
 - **Git**: Latest version with configuration support
 - **Shell**: Zsh with Oh My Zsh (via common-utils feature)
 - **Quarto**: Document publishing platform (latest version)
@@ -77,6 +80,21 @@ This includes:
   - Rainbow CSV
 - **VS Code Server**: Pre-installed for immediate development
 
+## 📊 R Language Support
+
+This dev container includes comprehensive R language support through the [Rocker Project's devcontainer features](https://github.com/rocker-org/devcontainer-features). The R feature provides:
+
+### Features Available
+- **R Installation**: Latest R version via apt package manager
+- **Development Tools**: devtools, renv for package management
+- **IDE Integration**: 
+  - languageserver package for VS Code R extension support
+  - httpgd package for interactive graphics
+  - rmarkdown for document generation
+- **Jupyter Integration**: R kernel for Jupyter notebooks
+- **Interactive Console**: radian (enhanced R console with syntax highlighting)
+- **Debugging Support**: vscDebugger package for VS Code R debugging
+
 ## ⚙️ VS Code Server
 
 The container comes with VS Code Server pre-installed for immediate development. For TRE-specific VS Code Server configuration, see the [SDF TRE Setup Guide](SDF_TRE_SETUP.md).
@@ -94,10 +112,13 @@ The container is built automatically with smart tagging:
 
 - **Main Branch Pushes**: Creates `latest`, `main`, and `main-<commit-sha>` tags
 - **Pull Requests**: Creates `pr-<number>` tags for testing
+- **VS Code Commits**: Creates `vscode-<vscode-commit-sha>` and `vscode-<vscode-commit-sha>-<commit-sha>` tags
 - **Manual Dispatch**: Available for on-demand builds
 - **Platform**: linux/amd64 optimized for development speed
 
 ### Tag Strategy
 - Use `latest` for the most recent stable release
 - Use `main-<commit-sha>` when you need reproducible builds
 - Use `pr-<number>` tags to test specific pull request changes
+- Use `vscode-<commit-sha>` tags to match specific VS Code versions
+- Use `vscode-<commit-sha>-<container-commit-sha>` tags for a combination of VS Code and git commits