fix: add Docker CLI installation step to workflow

Install docker-ce-cli in the workflow container before attempting to build
Docker images. The node:24-bookworm base image doesn't include Docker CLI,
causing the build step to fail with 'command not found'.

This enables the workflow to use Docker commands via the mounted Docker
socket from the runner.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

.forgejo/workflows/build-and-deploy.yaml

@@ -16,6 +16,17 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Install Docker CLI
+        run: |
+          apt-get update
+          apt-get install -y ca-certificates curl
+          install -m 0755 -d /etc/apt/keyrings
+          curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
+          chmod a+r /etc/apt/keyrings/docker.asc
+          echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian bookworm stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
+          apt-get update
+          apt-get install -y docker-ce-cli
+
       - name: Set up Docker image tags
         id: meta
         run: |