Add docker file

.gitea/workflows/deploy.yaml

@@ -13,6 +13,25 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+        - name: Install Docker CLI
+          run: |
+            apt-get update
+            apt-get install -y ca-certificates curl gnupg
+            install -m 0755 -d /etc/apt/keyrings
+            curl -fsSL https://download.docker.com/linux/debian/gpg | \
+              gpg --dearmor -o /etc/apt/keyrings/docker.gpg
+            chmod a+r /etc/apt/keyrings/docker.gpg
+
+            echo \
+              "deb [arch=$(dpkg --print-architecture) \
+              signed-by=/etc/apt/keyrings/docker.gpg] \
+              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: Build docker image
         run: |
           docker build -t mkdocs-builder -f ci/mkdocs/Dockerfile ci/mkdocs