Remove Docker CLI installation step from GitHub Actions workflow

.gitea/workflows/build.yaml

@@ -14,7 +14,7 @@ on:
 
 jobs:
   build:
-    runs-on: debian
+    runs-on: ubuntu-latest
     env:
       SERVER_URL: ${{ gitea.server_url }}
       OWNER: ${{ gitea.repository_owner }}
@@ -36,23 +36,6 @@ jobs:
         env:
           NODE_EXTRA_CA_CERTS: /etc/ssl/certs/ca-certificates.crt
 
-      # node:24-trixie (Debian 13) has git and node but no Docker CLI. Install
-      # the CLI and buildx from Docker's apt repo; the daemon is the runner's.
-      - name: Install Docker CLI
-        run: |
-          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
-          cat > /etc/apt/sources.list.d/docker.sources <<SRC
-          Types: deb
-          URIs: https://download.docker.com/linux/debian
-          Suites: $(. /etc/os-release && echo "$VERSION_CODENAME")
-          Components: stable
-          Signed-By: /etc/apt/keyrings/docker.asc
-          SRC
-          apt-get update
-          apt-get install -y --no-install-recommends docker-ce-cli docker-buildx-plugin
-
       - name: Log in to registry
         run: |
           REGISTRY="${SERVER_URL#https://}"