Add Dockerfile and workflow for building and pushing Docker image to …

…ghcr

.github/workflows/deploy.yaml

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+name: deploy
+
+on:
+  pull_request:
+  push:
+    branches: [main, '*-assessment-year']
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  publish-docker-image:
+    runs-on: ubuntu-latest
+    # Set token permissions so that we can publish to GitHub Container Registry
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.registry }}/${{ env.IMAGE_NAME }}
+          # Tag the following types of images:
+          #   * On a branch, tag with the branch name (e.g. `master`)
+          #   * On a PR, tag with the PR number (e.g. `pr-12`)
+          #   * On all events, tag with the short git SHA (e.g. `e956384`)
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=sha
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cahe-to: type=gha,mode=max

Dockerfile

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+FROM rocker/r-ver:4.3.1
+
+# Install system dependencies
+RUN apt-get update && apt-get install --no-install-recommends -y \
+    libcurl4-openssl-dev libssl-dev libxml2-dev libgit2-dev git \
+    libudunits2-dev python3-dev python3-pip
+
+# Install DVC to fetch data from S3 using dvc pull
+RUN pip install aiobotocore[boto3] boto3 dvc[s3]
+
+# Install R dependencies
+RUN Rscript -e 'renv::restore()'