test: add pre-installed packages to Docker image

.github/workflows/test-docker-image.yaml

@@ -0,0 +1,85 @@
+name: Test Docker Image Build
+
+on:
+  workflow_dispatch:
+  pull_request:
+    paths:
+      - 'Dockerfile'
+      - '.github/workflows/test-docker-image.yaml'
+
+jobs:
+  build-test-image:
+    name: Build Test Image
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set lowercase owner
+        run: echo "OWNER=${GITHUB_REPOSITORY_OWNER,,}" >> $GITHUB_ENV
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push test image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: linux/amd64
+          push: true
+          tags: |
+            ghcr.io/${{ env.OWNER }}/github-runner:test
+            ghcr.io/${{ env.OWNER }}/github-runner:test-${{ github.sha }}
+
+  verify-tools:
+    name: Verify Pre-installed Tools
+    needs: build-test-image
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Set lowercase owner
+        run: echo "OWNER=${GITHUB_REPOSITORY_OWNER,,}" >> $GITHUB_ENV
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Pull and verify test image
+        run: |
+          # Pull the test image
+          docker pull ghcr.io/${{ env.OWNER }}/github-runner:test
+
+          # Verify Atmos
+          echo "Checking Atmos..."
+          docker run --rm ghcr.io/${{ env.OWNER }}/github-runner:test atmos version
+
+          # Verify Terraform
+          echo "Checking Terraform..."
+          docker run --rm ghcr.io/${{ env.OWNER }}/github-runner:test terraform version
+
+          # Verify tfcmt
+          echo "Checking tfcmt..."
+          docker run --rm ghcr.io/${{ env.OWNER }}/github-runner:test tfcmt --version
+
+          # Verify terraform-docs
+          echo "Checking terraform-docs..."
+          docker run --rm ghcr.io/${{ env.OWNER }}/github-runner:test terraform-docs --version
+
+          # Summary
+          echo "✅ All tools verified successfully!"
+          echo "The Docker image is ready to use and will avoid GitHub API rate limits."

Dockerfile

@@ -26,6 +26,46 @@ RUN curl https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip -o awscliv2.zi
     && sudo ./aws/install \
     && sudo rm -rf aws awscliv2.zip
 
+# Install workflow tools to avoid GitHub API rate limits during execution
+# All tools are installed in a single layer to minimize image size
+RUN set -eux; \
+    ARCH="$(uname -m)"; \
+    case "$ARCH" in \
+        x86_64) ARCH='amd64' ;; \
+        aarch64) ARCH='arm64' ;; \
+        *) echo "Unsupported architecture: $ARCH"; exit 1 ;; \
+    esac; \
+    \
+    # Install Atmos CLI v1.195.0
+    echo "Installing Atmos CLI v1.195.0..."; \
+    curl -fsSL "https://github.com/cloudposse/atmos/releases/download/v1.195.0/atmos_1.195.0_linux_${ARCH}" -o /tmp/atmos && \
+    sudo install -m 755 /tmp/atmos /usr/local/bin/atmos && \
+    rm /tmp/atmos && \
+    atmos version && \
+    \
+    # Install Terraform (latest stable - 1.10.4)
+    echo "Installing Terraform v1.10.4..."; \
+    curl -fsSL "https://releases.hashicorp.com/terraform/1.10.4/terraform_1.10.4_linux_${ARCH}.zip" -o /tmp/terraform.zip && \
+    sudo unzip -q /tmp/terraform.zip -d /usr/local/bin/ && \
+    rm /tmp/terraform.zip && \
+    terraform version && \
+    \
+    # Install tfcmt v4.14.0
+    echo "Installing tfcmt v4.14.0..."; \
+    curl -fsSL "https://github.com/suzuki-shunsuke/tfcmt/releases/download/v4.14.0/tfcmt_linux_${ARCH}.tar.gz" -o /tmp/tfcmt.tar.gz && \
+    sudo tar -xzf /tmp/tfcmt.tar.gz -C /usr/local/bin/ tfcmt && \
+    rm /tmp/tfcmt.tar.gz && \
+    tfcmt --version && \
+    \
+    # Install terraform-docs v0.18.0
+    echo "Installing terraform-docs v0.18.0..."; \
+    curl -fsSL "https://github.com/terraform-docs/terraform-docs/releases/download/v0.18.0/terraform-docs-v0.18.0-linux-${ARCH}.tar.gz" -o /tmp/terraform-docs.tar.gz && \
+    sudo tar -xzf /tmp/terraform-docs.tar.gz -C /usr/local/bin/ terraform-docs && \
+    rm /tmp/terraform-docs.tar.gz && \
+    terraform-docs --version && \
+    \
+    echo "All tools installed successfully!"
+
 RUN mkdir -p ~/.ssh && \
     ssh-keyscan github.com >> ~/.ssh/known_hosts